I. Abt

Details der Publikationsliste

Zeitraum

1981 - 2009

Anzahl

692

Co-Autoren

Energy Flow and Charged Particle Spectra in Deep Inelastic Scattering at HERA (2007)

Collabora Ti On, I. Abt, T. Ahmed, V. Andreev

Global properties of the hadronic final state in deep inelastic scattering events at HERA are investigated. The data are corrected for detector effects and are compared directly with QCD...

DESY-04-086 hep-ex/0405059 Search for the Flavor-Changing Neutral Current Decay D (2007)

I. Abt, M. Adams, H. Albrecht, A. Aleksandrov

We report on a search for the flavor-changing neutral current decay D using 50 events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by the HERA-B experiment. We find...

Neutron Interactions as Seen by A Segmented Germanium Detector (2007)

Abt, I., Caldwell, A., Kroeninger, K., Liu, J., Liu, X., Majorovits, B.

The GERmanium Detector Array, GERDA, is designed for the search for ``neutrinoless double beta decay'' (0-nu-2-beta) with germanium detectors enriched in Ge76. An 18-fold segmented prototype detector...

Test of pulse shape analysis using single Compton scattering events (2007)

Abt, I., Caldwell, A., Kröninger, K., Liu, J., Liu, X., Majorovits, B.

Compton scattering is one of the dominant interaction processes in germanium for photons with an energy of around two MeV. If a photon scatters only once inside a germanium detector, the resulting...

Pulse shapes from electron and photon induced events in segmented high-purity germanium detectors (2007)

Abt, I., Caldwell, A., Kröninger, K., Liu, J., Liu, X., Majorovits, B.

Experiments built to search for neutrinoless double beta-decay are limited in their sensitivity not only by the exposure but also by the amount of background encountered. Radioactive isotopes in the...

Photoproduction of events with rapidity gaps between jets at HERA (2007)

Chekanov, S., Derrick, M., Magill, S., Miglioranzi, S., Musgrave, B., Nicholass, D., ...

The photoproduction of dijet events, where the two jets with the highest transverse energy are separated by a large gap in pseudorapidity, have been studied with the ZEUS detector using an integrated...

Characterization of the first true coaxial 18-fold segmented n-type prototype detector for the GERDA project (2007)

Abt, I., Caldwell, A., Gutknecht, D., Kröninger, K., Lampert, M., Liu, X., ...

The first true coaxial 18-fold segmented n-type HPGe prototype detector produced by Canberra-France for the GERDA neutrinoless double beta-decay project was tested both at Canberra-France and at the...

Identification of photons in double beta-decay experiments using segmented germanium detectors - studies with a GERDA Phase II prototype detector (2007)

Abt, I., Caldwell, A., Kröninger, K., Liu, J., Liu, X., Majorovits, B.

The sensitivity of experiments searching for neutrinoless double beta-decay of germanium was so far limited by the background induced by external gamma-radiation. Segmented germanium detectors can be...

K*0 and φ meson production in proton–nucleus interactions at Ös=41.6\textGeV (2007)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The inclusive production cross sections of the strange vector mesons K*0, K̄*0, and φ have been measured in interactions of 920 GeV protons with C, Ti, and W targets with the HERA-B detector at the...

Characterization of the first true coaxial 18-fold segmented n-type prototype detector for the GERDA project (2007)

Abt, I., Caldwell, A., Gutknecht, D., Kröninger, K., Lampert, M., Liu, X., ...

The first true coaxial 18-fold segmented n-type HPGe prototype detector produced by Canberra-France for the GERDA neutrinoless double beta-decay project was tested both at Canberra-France and at the...

Identification of photons in double beta-decay experiments using segmented germanium detectors - studies with a GERDA Phase II prototype detector (2007)

Abt, I., Caldwell, A., Kröninger, K., Liu, J., Liu, X., Majorovits, B.

The sensitivity of experiments searching for neutrinoless double beta-decay of germanium was so far limited by the background induced by external gamma-radiation. Segmented germanium detectors can be...

Background reduction in neutrinoless double beta decay experiments using segmented detectors - a Monte Carlo study for the GERDA setup (2007)

Abt, I., Altmann, M., Caldwell, A., Kröninger, K., Liu, X., Majorovits, B., ...

The identification of gamma radiation is essential for a new generation of double beta decay experiments. The GERmanium Detector Array, GERDA, located at the INFN Gran Sasso National Laboratory...

Pulse shapes from electron and photon induced events in segmented high-purity germanium detectors (2007)

Abt, I., Caldwell, A., Kröninger, K., Liu, J., Liu, X., Majorovits, B.

Experiments built to search for neutrinoless double beta-decay are limited in their sensitivity not only by the exposure but also by the amount of background encountered. Radioactive isotopes in the...

Bottom production cross section from double muonic decays of b-hadrons in 920 GeV proton-nucleus collision (2006)

Collaboration, The HERA-B, Abt, I.

The b-bbar production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavored hadrons in the kinematic region $-0.3

Measurement of the Upsilon Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions (2006)

Collaboration, The HERA-B, Abt, I.

The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sigma(J/\psi)}$ has been measured with the HERA-B spectrometer in fixed-target proton-nucleus...

Precision Electroweak Measurements on the Z Resonance (2006)

Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...

We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...

Precision Electroweak Measurements on the Z Resonance (2006)

Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...

We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...

Polarization of Λ and Λ overbar in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

A measurement of the polarization of Λ and baryons produced in pC and pW collisions at has been performed with the HERA-B spectrometer. The measurements cover the kinematic range of 0.6 GeV/c

Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions. (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The mid-rapidity (dσpN/dy at y=0) and total (σpN) production cross sections of Jψ mesons are measured in proton–nucleus interactions. Data collected by the HERA-B experiment in interactions of...

Measurement of the Υ production cross section in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The cross section ratio RJ/ψ=Br(Υ→l+l−)dσ(Υ)/dy|y=0/σ(J/ψ) has been measured with the HERA-B spectrometer in fixed-target proton–nucleus collisions at 920 GeV proton beam energy...

Improved measurement of the b[overline b] production cross section in 920 GeV fixed-target proton-nucleus collisionsnd in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

A new measurement of the b[overline b] production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B Collaboration. The b[overline b] production is tagged via inclusive...

A Measurement of the ψ′ to J/ψ production ratio in 920 GeV proton-nucleus interactions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Ratios of the ψ′ over the J/ψ production cross sections in the dilepton channel for C, Ti and W targets have been measured in 920 GeV proton-nucleus interactions with the HERA-B detector at the...

MEASUREMENT OF THE UPSILON PRODUCTION CROSS SECTION IN 920 GEV FIXED-TARGET PROTON-NUCLEUS COLLISIONS. (2006)

HERA-B Collaboration, Abt, I., Et Al.

The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sigma(J/\psi)}$ has been measured with the HERA-B spectrometer in fixed-target proton-nucleus...

Improved Measurement of the b-bbar Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions (2005)

Collaboration, The HERA-B, Abt, I.

A new measurement of the b-bbar production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B collaboration. The b-bbar production is tagged via inclusive bottom quark...

Limits for the central production of Theta^+ and Xi^{--} pentaquarks in 920 GeV pA collisions (2004)

Collaboration, The HERA-B, Abt, I.

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

A Detector for Forward Physics at eRHIC: Feasibility Study (2004)

Abt, I., Caldwell, A., Liu, X., Sutiak, J.

The eRHIC facility planned for the Brookhaven National Laboratory will allow detailed studies of the strong hadronic interactions. Among the exciting research topics discussed are the pursuit of the...

A New 76Ge Double Beta Decay Experiment at LNGS (2004)

Abt, I., Altmann, M., Bakalyarov, A., Barabanov, I., Bauer, C., Bellotti, E., ...

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the...

Limits for the central production of Θ+ and Ξ-- pentaquarks in 920 GeV pA collsions (2004)

Abt,I., Adams,M., Albrecht,H., Amaral,V., Amorim,A., Aplin,S. J., ...

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Search for the Flavor-Changing Neutral Current Decay D0->μ+μ- with the HERA-B Detector (2004)

Abt,I., Adams,M., Albrecht,H., Amaral,V., Amorim,A., Aplin,S. J., ...

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

A NEW GE-76 DOUBLE BETA DECAY EXPERIMENT AT LNGS: LETTER OF INTENT (2004)

Abt,I.

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the...

SEARCH FOR THE FLAVOR CHANGING NEUTRAL CURRENT DECAY D0 ---> MU+ MU- WITH THE HERA-B DETECTOR (2004)

Abt,I.

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

LIMITS FOR THE CENTRAL PRODUCTION OF THETA+ AND XI-- PENTAQUARKS IN 920-GEV PA COLLISIONS (2004)

Abt,I.

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Limits for the central production of Θ+ and Ξ-- pentaquarks in 920 GeV pA collsions (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., Aplin, S. J., ...

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Search for the Flavor-Changing Neutral Current Decay D0->μ+μ- with the HERA-B Detector (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., Aplin, S. J., ...

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

A NEW GE-76 DOUBLE BETA DECAY EXPERIMENT AT LNGS: LETTER OF INTENT (2004)

Abt, I., Et Al.

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the...

SEARCH FOR THE FLAVOR CHANGING NEUTRAL CURRENT DECAY D0 ---> MU+ MU- WITH THE HERA-B DETECTOR (2004)

HERA-B Collaboration, Abt, I., Et Al.

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

A NEW DETECTOR FOR PHYSICS AT HERA (2004)

Abt, I.

A new detector\cite{ref:loi} designed to enlarge the kinematic range to study the structure functions $F_2$ and $F_l$ at the e[27.5GeV]~p[920GeV] collider HERA at DESY is presented. The kinematic...

LIMITS FOR THE CENTRAL PRODUCTION OF THETA+ AND XI-- PENTAQUARKS IN 920-GEV PA COLLISIONS (2004)

HERA-B Collaboration, Abt, I., Et Al.

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Letter of Intent : A New 76Ge Double Beta Decay Experiment at LNGS (2004)

Karl-Tasso Knöpfle, Abt, I.

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the...

Search for the flavor-changing neutral current decay D0→μ0+μ- with the HERA-B detector (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

We report on a search for the flavor-changing neutral current decay D0→μ+μ- using 50×106 events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by the HERA-B...

Substructure dependence of jet cross sections at HERA and determination of alpha(S) (2004)

Chekanov, S., Derrick, M., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

Jet substructure and differential cross sections for jets produced in the photoproduction and deep inelastic ep scattering regimes have been measured with the ZEUS detector at HERA using an...

Observation of isolated high-E-T photons in deep inelastic scattering (2004)

Chekanov, S., Derrick, M., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

First measurements of cross sections for isolated prompt photon production in deep inelastic ep scattering have been made using the ZEUS detector at the HERA electron-proton collider using an...

The dependence of dijet production on photon virtuality in ep collisions at HERA (2004)

Chekanov, S., Derrick, M., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

The dependence of dijet production on the virtuality of the exchanged photon, Q(2), has been studied by measuring dijet cross sections in the range 0 less than or similar to Q(2) lt 2000 GeV2 with...

Evidence for a narrow baryonic state decaying to K0s-p and K0s-pbar in deep inelastic scattering at HERA (2004)

Chekanov, S., Derrick, M., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

A resonance search has been made in the K(S)(0)p and K-S(0)(p) over bar invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb(-1). The search was...

Exclusive electroproduction of J/psi mesons at HERA (2004)

Chekanov, S., Derrick, A., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

The exclusive electroproduction of J/psi mesons, ep → epJ/psi, has been studied with the ZEUS detector at HERA for virtualities of the exchanged photon in the ranges 0.15 lt Q(2) lt 0.8 GeV2 and 2...

Measurement of beauty production in deep inelastic scattering at HERA (2004)

Chekanov, S., Derrick, M., Loizides, J.H., Magill, S., Miglioranzi, S., Musgrave, B., ...

The beauty production cross section for deep inelastic scattering events with at least one hard jet in the Breit frame together with a union has been measured, for photon virtualities Q(2) gt 2 GeV2,...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

Inclusive V 0 production cross sections from 920 GeV fixed target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Inclusive differential cross sections dσpA/dxF and dσpA/dp2t for the production of K0S, Λ, and Λ particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

Update on the performance of the HERA-B Vertex Detector System (2003)

Abt,I., Perschke,T, Schaller,S., Masciocchi,S., Bauer,C., Bräuer,M., ...

The HERA-B Vertex Detector System (VDS) is a Roman Pot system integrated into the proton ring of the HERA accelerator at DESY and serves as an independent part of the tracking system of the HERA-B...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ’s produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Performance of the HERA-B vertex detector system (2003)

Bauer,C., Bräuer,M., Glebe,T., Hofmann,W., Jagla,T., Knöpfle,K.T., ...

The Vertex Detector System (VDS) of the HERA-B experiment is a forward microvertex detector integrated into the HERA proton storage ring at DESY. Double-sided silicon microstrip detectors mounted in...

UPDATE ON THE PERFORMANCE OF THE HERA-B VERTEX DETECTOR SYSTEM. (2003)

Abt,I., Perschke,T., Schaller,S., Masciocchi,S., Bauer,C., Brauer,M., ...

The HERA-B Vertex Detector System (VDS) is a Roman Pot system integrated into the proton ring of the HERA accelerator at DESY and serves as an independent part of the tracking system of the HERA-B...

PERFORMANCE OF THE HERA-B VERTEX DETECTOR SYSTEM (2003)

Bauer,C., Brauer,M., Glebe,T., Hofmann,W., Jagla,T., Knopfle,K. T., ...

The Vertex Detector System (VDS) of the HERA-B experiment is a forward microvertex detector integrated into the HERA proton storage ring at DESY. Double-sided silicon microstrip detectors mounted in...

Inclusive $V^0$ Production Cross Sections from 920 GeV Fixed Target Proton-Nucleus Collisions (2003)

Abt,I.

Inclusive differential cross sections $d\sigma_{pA}/dx_F$ and $d\sigma_{pA}/dp_t^2$ for the production of \kzeros, \lambdazero, and \antilambda particles are measured at HERA in proton-induced...

$J-\psi$ Production via $\chi_c$ Decays in 920 GeV pA Interactions (2003)

Abt,I.

Using data collected by the HERA-B experiment, we have measured the fraction of J\psi's produced via radiative chi_c decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Measurement of the $b \bar b$ Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions (2003)

Abt,I.

Using the HERA-B detector, the b-bbar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b-bbar production was tagged via inclusive bottom...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

Update on the performance of the HERA-B Vertex Detector System (2003)

Abt, I., Perschke, T, Schaller, S., Masciocchi, S., Bauer, C., Bräuer, M., ...

The HERA-B Vertex Detector System (VDS) is a Roman Pot system integrated into the proton ring of the HERA accelerator at DESY and serves as an independent part of the tracking system of the HERA-B...

Inclusive V 0 production cross sections from 920 GeV fixed target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Inclusive differential cross sections dσpA/dxF and dσpA/dp2t for the production of K0S, Λ, and Λ particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ’s produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Performance of the HERA-B vertex detector system (2003)

Bauer, C., Bräuer, M., Glebe, T., Hofmann, W., Jagla, T., Knöpfle, K.T., ...

The Vertex Detector System (VDS) of the HERA-B experiment is a forward microvertex detector integrated into the HERA proton storage ring at DESY. Double-sided silicon microstrip detectors mounted in...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

UPDATE ON THE PERFORMANCE OF THE HERA-B VERTEX DETECTOR SYSTEM. (2003)

Abt, I., Perschke, T., Schaller, S., Masciocchi, S., Bauer, C., Brauer, M., ...

The HERA-B Vertex Detector System (VDS) is a Roman Pot system integrated into the proton ring of the HERA accelerator at DESY and serves as an independent part of the tracking system of the HERA-B...

PERFORMANCE OF THE HERA-B VERTEX DETECTOR SYSTEM (2003)

Bauer, C., Brauer, M., Glebe, T., Hofmann, W., Jagla, T., Knopfle, K. T., ...

The Vertex Detector System (VDS) of the HERA-B experiment is a forward microvertex detector integrated into the HERA proton storage ring at DESY. Double-sided silicon microstrip detectors mounted in...

Inclusive $V^0$ Production Cross Sections from 920 GeV Fixed Target Proton-Nucleus Collisions (2003)

Abt, I., Et Al.

Inclusive differential cross sections $d\sigma_{pA}/dx_F$ and $d\sigma_{pA}/dp_t^2$ for the production of \kzeros, \lambdazero, and \antilambda particles are measured at HERA in proton-induced...

$J-\psi$ Production via $\chi_c$ Decays in 920 GeV pA Interactions (2003)

Abt, I., Et Al.

Using data collected by the HERA-B experiment, we have measured the fraction of J\psi's produced via radiative chi_c decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Measurement of the $b \bar b$ Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions (2003)

Abt, I., Et Al.

Using the HERA-B detector, the b-bbar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b-bbar production was tagged via inclusive bottom...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ's produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Radiation hardness of the HERA-B double-sided silicon strip detectors (2002)

Bauer,C., Glebe,T., Knöpfle,K. T., Pugatch,V., Schwingenheuer,B., Abt,I., ...

Irradiation studies of double-sided silicon strip-detectors for the HERA-B experiment have been performed using a setup at a 21 MeV proton beam. A novel method of fluence monitoring has been...

RADIATION HARDNESS OF THE HERA-B DOUBLE-SIDED SILICON STRIP DETECTORS. (2002)

Bauer,C., Glebe,T., Knöpfle,K. T., Pugatch,V., Schwingenheuer,B., Abt,I., ...

Irradiation studies of double-sided silicon strip-detectors for the HERA-B experiment have been performed using a setup at a 21 MeV proton beam. A novel method of fluence monitoring has been...

Cellular automaton and Kalman filter based track search in the HERA-B pattern tracker (2002)

Abt,I., Emeliyanov,D., Gorbounovc,I., Kisel,I.

The paper describes track reconstruction package OTR/ITR-CATS developed for the Pattern Tracker of the HERA-B experiment. This package employs a combined approach for track reconstruction based on...

CATS: a cellular automaton for tracking in silicon for the HERA-B vertex detector (2002)

Abt,I., Emeliyanov,D., Kisela,I., Masciocchi,S.

The new track reconstruction program CATS developed for the Vertex Detector System of the HERA-B experiment at DESY is presented. It employs a cellular automaton for track searching and the Kalman...

Radiation hardness of the HERA-B double-sided silicon strip detectors (2002)

Bauer, C., Glebe, T., Knöpfle, K. T., Pugatch, V., Schwingenheuer, B., Abt, I., ...

Irradiation studies of double-sided silicon strip-detectors for the HERA-B experiment have been performed using a setup at a 21 MeV proton beam. A novel method of fluence monitoring has been...

RADIATION HARDNESS OF THE HERA-B DOUBLE-SIDED SILICON STRIP DETECTORS. (2002)

Bauer, C., Glebe, T., Knöpfle, K. T., Pugatch, V., Schwingenheuer, B., Abt, I., ...

Irradiation studies of double-sided silicon strip-detectors for the HERA-B experiment have been performed using a setup at a 21 MeV proton beam. A novel method of fluence monitoring has been...

Cellular automaton and Kalman filter based track search in the HERA-B pattern tracker (2002)

Abt, I., Emeliyanov, D., Gorbounovc, I., Kisel, I.

The paper describes track reconstruction package OTR/ITR-CATS developed for the Pattern Tracker of the HERA-B experiment. This package employs a combined approach for track reconstruction based on...

CATS: a cellular automaton for tracking in silicon for the HERA-B vertex detector (2002)

Abt, I., Emeliyanov, D., Kisela, I., Masciocchi, S.

The new track reconstruction program CATS developed for the Vertex Detector System of the HERA-B experiment at DESY is presented. It employs a cellular automaton for track searching and the Kalman...

Cluster shapes and cluster sizes in the HERA-B silicon vertex detector (2001)

Abt,I., Bauer,C., Bräuer,M., Dressel,M., Glebe,T., Jagla,T., ...

We report on investigations of shape and size of the clusters on the silicon detectors of the HERA-B vertex detector. The data taken during the commissioning run of 1999 are compared to predictions...

Cluster shapes and cluster sizes in the HERA-B silicon vertex detector (2001)

Abt, I., Bauer, C., Bräuer, M., Dressel, M., Glebe, T., Jagla, T., ...

We report on investigations of shape and size of the clusters on the silicon detectors of the HERA-B vertex detector. The data taken during the commissioning run of 1999 are compared to predictions...

Studies of QCD in $e^{+}e^{-} \to$ hadrons at $E_{cm}$ = 130 and 136 GeV (1997)

Buskulic, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., ...

An analysis of the properties of hadronic final states produced in electron-positron annihilation at centre-of-mass energies of 130 and 136 GeV is presented. The measurements are based on a data...

Studies of QCD in $e^{+}e^{-} \to$ hadrons at $E_{cm}$ = 130 and 136 GeV (1997)

Buskulic, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., ...

An analysis of the properties of hadronic final states produced in electron-positron annihilation at centre-of-mass energies of 130 and 136 GeV is presented. The measurements are based on a data...

First Measurement of the Left-Right Charge Asymmetry in Hadronic Z Boson Decays and a New Determination of sin^2(theta_eff) (1996)

Abe, SLD Collaboration: K., Abe, K., Abt, I.

We present the first measurement of the left-right charge asymmetry A_Q^{obs} in hadronic Z boson decays. This was performed at E_cm = 91.27 GeV with the SLD at the SLAC Linear Collider with a...

Search for charginos and neutralinos with R-parity violation at $\sqrt{s}$ = 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

Searches for charginos and neutralinos produced in e+e- collisions at centre-of-mass energies of 130 and 136 GeV have been performed under the assumptions that R-parity is not conserved, that the...

Strange b baryon production and lifetime in Z decays (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

In a data sample of approximately four million hadronic Z decays recorded with the ALEPH detector from 1990 to 1995, a search for the strange b baryon Xi_b is performed with a study of Xi-lepton...

Search for heavy lepton pair production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

A search for pair production of new heavy leptons has been performed assuming different scenarios for the mixing of the new particles with Standard Model leptons. No candidate events were found in a...

Mass Limit for the standard model Higgs boson with the full LEP I ALEPH data sample (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

background from the electroweak process e+e- --> l+ l- q qbar. This search results in a 95% C.L. lower limit on the Higgs boson mass of $63.9$~\Gcs. The reaction e+e- --> HZ* is used to search for...

Search for CP violation in the decay Z --> b$\overline{b}$g (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

About three million hadronic decays of the Z collected by ALEPH in the years 1991 to 1994 are used to search for anomalous CP violation beyond the Standard Model in the decay Z -> bbg. The study is...

Measurement of the b forward-backward asymmetry and mixing using high-p$_{\perp}$ leptons (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The B0-B0# average mixing parameter chi and b forward-backward asymmetry are measured from a sample of 4,200,000 Z -> q qbar events recorded with the ALEPH detector at LEP in the years 1990-1995....

First study of rapidity gaps in e+e- annihilation (1996)

Abe, K, Abt, I, Ahn, C J, Akagi, T, Allen, N J, Ash, William W, ...

We present the first study of rapidity gaps in e+e- annihilations using Z0 decays collected by the SLD experiment at SLAC. Our measured rapidity gap spectra all exponentially with increasing gap size...

A study of single and multi-photon production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The production of final states involving one or more energetic photons from e+e- collisions at high energies is studied using data collected by the ALEPH detector at LEP. The data consist of two...

Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The four-jet final state is analyzed to search for hadronic decays of pair-produced heavy particles. The analysis uses the ALEPH data collected at LEP in November 1995 at centre-of-mass energies of...

Studies of QCD in $e^{+}e^{-}\to$ hadrons at E$_{cm}$ = 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

Studies of QCD in $\mbox{e}^+\mbox{e}^- \rightarrow$ Hadrons at $E_{cm} = $} 130 and 136 GeV The ALEPH Collaboration An analysis of the properties of hadronic final states produced in...

Measurement of hadron and lepton-pair production from e+e- annihilation at centre-of-mass energies of 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

Hadronic and leptonic cross-sections and forward-backward asymmetries are measured using 5.7~pb$^{-1}$ of data taken with the ALEPH detector at LEP at $\cms$ energies of 130 and 136~GeV. The results...

Study of the B$_{s}^{0}\overline{B}_{s}^{0}$ oscillation frequency using D$_{s}^{-}$l$^{+}$ combinations in Z decays (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

A lower limit on the oscillation frequency of the BsBsbar system is obtained from approximately four million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1995. Leptons...

Measurement of the mass of the $\Lambda_{b}$ baryon (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

In a data sample of four million hadronic \Z\ decays collected with the ALEPH detector at LEP, four $\Lambda_b$ baryon candidates are exclusively reconstructed in the $\Lambda_b \rightarrow...

Test of the flavor independence of strong interactions (1996)

Abe, K., Abt, I., Ahn, C. J., Akagi, T., Allen, N. J., Ash, W. W., ...

We present a comparison of the strong couplings of light (u, d, and s), c, and b quarks determined from multijet rates in flavor-tagged samples of hadronic Z0 decays recorded with the SLC Large...

Determination of sin$^{2}\vartheta^{eff}_{W}$ using jet charge measurements in hadronic Z decays (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The electroweak mixing angle is determined with high precision from measurements of the mean difference between forward and backward hemisphere charges in hadronic decays of the Z. A data sample of...

Improved measurement of the $\overline{B}^{0}$ and B$^{-}$ meson lifetimes (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The lifetimes of the \b0 \ and \bp\ mesons have been measured with the \aleph\ detector at LEP, using approximately 3 million hadronic Z decays collected in the period 1991--1994. In the first of...

Search for supersymmetric particles in e+e- collisions at centre-of-mass energies of 130 and 136 GeV (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

Search for supersymmetric particles in e+e- collisions at centre-of-mass energies of 130 and 136 GeV. Searches for supersymmetric particles produced in e+e- collisions at centre-of-mass energies of...

Measurements of Rb with impact parameters and displaced vertices (1996)

Abe, K., Abt, I., Ahn, C. J., Akagi, T., Allen, N. J., Ash, W. W., ...

We present measurements of Rb using the SLD at the SLC. The analyses use 2D and 3D impact parameter tags and a displaced 3D vertex tag which all exploit the small size and stability of the e+e-...

Measurement of $\Lambda$ polarization from Z decays (1996)

Buskulic, Damir, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, ...

The polarization of \Lambda baryons from Z decays is studied with the {\sc Aleph} apparatus. Evidence of longitudinal polarization of s quarks from Z decay is observed for the first time. The...

Quark and gluon jet properties in symmetric three-jet events (1996)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

Quark and gluon jets with the same energy, 24GeV, are compared in symmetric three-jet configurations from hadronic Z decays observed by the ALEPH detector. Jets are defined using the Durham...

FIRST STUDY OF RAPIDITY GAPS IN e (1996)

Annihilation Abe, I. Abt, T. Akagi, C. Baltay

We present the first study of rapidity gaps in e + e - annihilations, using Z 0 decays collected by the SLD experiment at SLAC. Our measured rapidity gap spectra fall exponentially with increasing...

Measurement of $\Lambda_{b}$ polarization in Z decays (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

The \Lambda_{\mathrm{b}} polarization in hadronic \mathrm{Z} decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample of...

Tau hadronic branching ratios (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

From 64492 selected \tau-pair events, produced at the Z^0 resonance, the measurement of the tau decays into hadrons from a global analysis using 1991, 1992 and 1993 ALEPH data is presented. Special...

Measurement of the B$^{0}_{s}$ lifetime and production rate with D$^{-}_{s}$ l$^{+}$ combinations in Z decays (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...

Measurement of the $\tau$ lepton lifetime (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

The mean lifetime of the \tau lepton is measured in a sample of 25700 \tau pairs collected in 1992 with the ALEPH detector at LEP. A new analysis of the 1-1 topology events is introduced. In this...

Tau leptonic branching ratios (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

A sample of 62249 \tau-pair events is selected from data taken with the ALEPH detector in 1991, 1992 and 1993. The measurement of the branching fractions for \tau decays into electrons and muons is...

A precise measurement of the average b hadron lifetime (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991-1993 runs of ALEPH, with the silicon vertex detector...

Production of excited beauty states in Z decays (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

A data sample of about 3.0 million hadronic Z decays collected by the ALEPH experiment at LEP in the years 1991 through 1994, is used to make an inclusive selection of B~hadron events. In this event...

Limit on B$^{0}_{s}$ oscillation using a jet charge method (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals |Y| \leq 0.5,1.0, 1.5,2.0\/ along the thrust axis and also without restriction...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals $|Y| \leq 0.5,1.0,1.5,2.0$ along the thrust axis and also without restriction...

Measurement of the B$^0_s$ lifetime and production rate with D$^-_s l^+$ combinations in Z decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...

Limit on $B^0_s$ oscillation using a jet charge method (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a...

An upper limit for the $\tau$ neutrino mass from $\tau \rightarrow 5 \pi (\pi^0) \nu_{\tau}$ decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

An upper limit for the tau-neutrino mass has been determined from the decay tau -> 5pi+- \nu_tau using data collected with the OPAL detector from 1991 to 1995 in e+e- collisions at \sqrt{s} ~ M_Z. A...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals $|Y| \leq 0.5,1.0,1.5,2.0$ along the thrust axis and also without restriction...

Measurement of the B$^0_s$ lifetime and production rate with D$^-_s l^+$ combinations in Z decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...

Limit on $B^0_s$ oscillation using a jet charge method (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a...

An upper limit for the $\tau$ neutrino mass from $\tau \rightarrow 5 \pi (\pi^0) \nu_{\tau}$ decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

An upper limit for the tau-neutrino mass has been determined from the decay tau -> 5pi+- \nu_tau using data collected with the OPAL detector from 1991 to 1995 in e+e- collisions at \sqrt{s} ~ M_Z. A...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals $|Y| \leq 0.5,1.0,1.5,2.0$ along the thrust axis and also without restriction...

Measurement of the B$^0_s$ lifetime and production rate with D$^-_s l^+$ combinations in Z decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...

Limit on $B^0_s$ oscillation using a jet charge method (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a...

An upper limit for the $\tau$ neutrino mass from $\tau \rightarrow 5 \pi (\pi^0) \nu_{\tau}$ decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

An upper limit for the tau-neutrino mass has been determined from the decay tau -> 5pi+- \nu_tau using data collected with the OPAL detector from 1991 to 1995 in e+e- collisions at \sqrt{s} ~ M_Z. A...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals $|Y| \leq 0.5,1.0,1.5,2.0$ along the thrust axis and also without restriction...

Measurement of the B$^0_s$ lifetime and production rate with D$^-_s l^+$ combinations in Z decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...

Limit on $B^0_s$ oscillation using a jet charge method (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a...

An upper limit for the $\tau$ neutrino mass from $\tau \rightarrow 5 \pi (\pi^0) \nu_{\tau}$ decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

An upper limit for the tau-neutrino mass has been determined from the decay tau -> 5pi+- \nu_tau using data collected with the OPAL detector from 1991 to 1995 in e+e- collisions at \sqrt{s} ~ M_Z. A...

Measurements of the charged particle multiplicity distribution in restricted rapidity intervals (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals $|Y| \leq 0.5,1.0,1.5,2.0$ along the thrust axis and also without restriction...

Measurement of the B$^0_s$ lifetime and production rate with D$^-_s l^+$ combinations in Z decays (1995)

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., ...

The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were...