Investigation of the Exclusive ^{3}He(e,e'pn)p Reaction (2009)
Middleton, D. G., Annand, J. R. M., Antelo, M. Ases, Ayerbe, C., Barneo, P., Baumann, D., ...
Cross sections for the ^{3}He(e,e'pn)p reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections...
Virtual Compton Scattering measurements in the $\gamma^* N\to \Delta$ transition (2008)
Sparveris, N. F., Achenbach, P., Gayoso, C. Ayerbe, Baumann, D., Bernauer, J., Bernstein, A. M., ...
We report on new H$(e,e^\prime p)\gamma$ measurements in the $\Delta(1232)$ resonance at $Q^2=0.06$ (GeV/c) carried out simultaneously with H$(e,e^\prime p)\pi^0$. It is the lowest $Q^2$ for which...
Janssens, The MAMI-A1 Collaboration: P., Doria, L., Achenbach, P., Gayoso, C. Ayerbe, Baumann, D., Bernauer, J. C., ...
The cross section of the $ep \to e' p' \gamma$ reaction has been measured at $Q^2 = 0.33$ (GeV/c)$^2$. The experiment was performed using the electron beam of the MAMI accelerator and the standard...
He-3(e,e'pp) and He-3(e,e'pn) reactions at AmPS and MAMI (2008)
Middleton, D.G., Annand, J.R.M., Ases Antelo, M., Ayerbe, C., Barneo, P., Baumann, D., ...
This paper reports on measurements of the He-3(e,e'pp) reaction measured at AmPS and the He-3(e,e'pn) reaction measured at MAMI. The measurements were performed in similar kinematics to allow a...
Merkel, H., Achenbach, P., Gayoso, C. A. Ayerbe, Bernauer, J. C., Böhm, R., Bosnar, D., ...
The beam-recoil double polarization P_{x'}^h and P_{z'}^h and the recoil polarization P_{y'} were measured for the first time for the p(\vec{e},e'\vec{p})\eta reaction at a four-momentum transfer of...
Merkel, H., Achenbach, P., Gayoso, C. A. Ayerbe, Bernauer, J. C., Böhm, R., Bosnar, D., ...
The beam-recoil double polarization P_{x'}^h and P_{z'}^h and the recoil polarization P_{y'} were measured for the first time for the p(\vec{e},e'\vec{p})\eta reaction at a four-momentum transfer of...
First measurements of the ^16O(e,e'pn)^14N reaction (2007)
Middleton, D. G., Annand, J. R. M., Barbieri, C., Barneo, P., Bartsch, P., Bauman, D., ...
This paper reports on the first measurement of the ^16O(e,e'pn)^14N reaction. Data were measured in kinematics centred on a super-parallel geometry at energy and momentum transfers of 215 MeV and 316...
MERKEL, H, ACHENBACH, P, GAYOSO, CA, BERNAUER, JC, BOHM, R, BOSNAR, D, ...
BENSAFA, IK, ACHENBACH, P, ANTELO, MA, AYERBE, C, BAUMANN, D, BOHM, R, ...
Bensafa, I. K., Achenbach, P., Ases Antelo, M., Ayerbe, C., Baumann, D., Böhm, R., ...
The beam-helicity asymmetry has been measured simultaneously for the reactions (e p \to e p \gamma) and (e p \to e p \pi^0) in the $\Delta (1232)$ resonance region at $Q^2=$ 0.35 (GeV/c)$^2$. The...
Collaboration, The MAMI-A1, Bensafa, I. K., Achenbach, P., Antelo, M. Ases, Ayerbe, C., Baumann, D., ...
The beam-helicity asymmetry has been measured simultaneously for the reactions (e p \to e p \gamma) and (e p \to e p \pi^0) in the $\Delta (1232)$ resonance region at $Q^2=$ 0.35 (GeV/c)$^2$. The...
Sparveris, N. F., Achenbach, P., Gayoso, C. Ayerbe, Baumann, D., Bernauer, J., Bernstein, A. M., ...
We report new precise p$(\vec{e},e^\prime p)\pi^0$ measurements at the peak of the $\Delta^{+}(1232)$ resonance at $Q^2=\unit[0.20](GeV/c)^2$ performed at the Mainz Microtron (MAMI). The new data are...
Lowest Q^2 Measurement of the gamma*p -> Delta Reaction: Probing the Pionic Contribution (2006)
Stave, S., Distler, M. O., Nakagawa, I., Sparveris, N., Achenbach, P., Gayoso, C. Ayerbe, ...
To determine nonspherical angular momentum amplitudes in hadrons at long ranges (low Q^2), data were taken for the p(\vec{e},e'p)\pi^0 reaction in the Delta region at Q^2=0.060 (GeV/c)^2 utilizing...
Elsner, D., Süle, A., Barneo, P., Bartsch, P., Baumann, D., Bermuth, J., ...
The reaction p(e,e'p)pi^0 has been studied at Q^2=0.2 (GeV/c)^2 in the region of W=1232 MeV. From measurements left and right of q, cross section asymmetries \rho_LT have been obtained in forward...
Measurement of the asymmetries in 3He(e,e'p)d and 3He(e,e'p)np (2005)
Achenbach, P., Baumann, D., Boehm, R., Boillat, B., Bosnar, D., Carasco, C., ...
The electron-target-asymmetries A_parallel and A_perpendicular with target spin parallel and perpendicular to the momentum transfer q were measured for both the two-- and three-body breakup of 3He in...
Measurement of the Electric Form Factor of the Neutron at Q^2 = 0.3-0.8 (GeV/c)^2 (2004)
Glazier, D. I., Seimetz, M., Annand, J. R. M., Arenhövel, H., Antelo, M. Ases, Ayerbe, C., ...
The electric form factor of the neutron, G_En, has been measured at the Mainz Microtron by recoil polarimetry in the quasielastic D(e_pol,e'n_pol)p reaction. Three data points have been extracted at...
Kohl, M., Antelo, M. Ases, Ayerbe, C., Baumann, D., Boehm, R., Bosnar, D., ...
In two series of high-resolution coincidence experiments at the three-spectrometer facility at MAMI, the H(e,e'pi^+)X and D(e,e'p)X reactions were studied to search for narrow nucleon resonances...
The neutron charge form factor and target analyzing powers from pol.3He(pol e,e'n)-scattering (2003)
Bermuth, J., Merle, P., Carasco, C. C., Baumann, D., Boehm, R., Bosnar, D., ...
The charge form factor of the neutron has been determined from asymmetries measured in quasi--elastic pol.3He(pol e,e'n) at a momentum transfer of 0.67(GeV/c)^2. In addition, the target analyzing...
Final State Interaction Effects in pol 3He(pol e,e'p) (2003)
Carasco, C., Bermuth, J., Merle, P., Bartsch, P., Baumann, D., Boehm, R., ...
Asymmetries in quasi-elastic pol 3He(pol e,e'p) have been measured at a momentum transfer of 0.67 (GeV/c)^2 and are compared to a calculation which takes into account relativistic kinematics in the...
Bartsch, P., Baumann, D., Bermuth, J., Bohm, R., Bohinc, K., Bosnar, D., ...
In a p((e) over right arrow, e' p)pi(0) out-of-plane coincidence experiment at the three-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around...
Bartsch, P., Baumann, D., Bermuth, J., Boehm, R., Bohinc, K., Bosnar, D., ...
In a p(e_pol,e'p)pi_0 out-of-plane coincidence experiment at the 3-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around the energy of the...
Polarization transfer in the 4He(e,e'p)3H reaction (2001)
Dieterich, S., Bartsch, P., Baumann, D., Bermuth, J., Bohinc, K., Bohm, R., ...
Polarization transfer in the4He(e,e'p)3H reaction at a Q2 of 0.4 (GeV/c)2 was measured at the Mainz Microtron MAMI. The ratio of the transverse to the longitudinal polarization components of the...
Polarization transfer in the $^{4}$He$(\vec{e},e' \vec{p}^{3}$H reaction (2000)
Dieterich, S., Bartsch, P., Baumann, D., Bermuth, J., Bohinc, K., Böhm, R., ...
Polarization transfer in the 4He(e,e'p)3H reaction at a Q^2 of 0.4 (GeV/c)^2 was measured at the Mainz Microtron MAMI. The ratio of the transverse to the longitudinal polarization components of the...
Initial state interaction in the $(\pi^{+},3p)$ reaction on N, Ar and Xe (1998)
Kotlínski, B, Androic, D, Backenstoss, Gerhard, Bosnar, D, Breuer, H, Döbbeling, H, ...
Multinucleon pion absorption on $^{4}He$ into the pppn final state (1997)
Lehmann, A, Androic, D, Backenstoss, Gerhard, Bosnar, D, Breuer, H, Döbbeling, H, ...
Pion absorption on $^{3}He$ and $^{4}He$ with emission of three energetic protons (1997)
Lehmann, A, Androic, D, Backenstoss, Gerhard, Bosnar, D, Breuer, H, Döbbeling, H, ...
A large acceptance detector system (LADS) for studies of pion absorption (1996)
Alteholz, T, Androic, D, Backenstoss, Gerhard, Bosnar, D, Breuer, H, Brkovic, A, ...
Evidence of initial state interactions in multi-nucleon pion absorption (1996)
Androic, D, Backenstoss, Gerhard, Bosnar, D, Breuer, H, Döbbeling, H, Dooling, T, ...
A Large Solid Angle Study of Pion Absorption on He3 (1994)
Collaboration, LADS, Alteholz, T., Androic, D., Backenstoss, G., Bosnar, D., Breuer, H., ...
Measurements have been made of pi+ absorption on He3 at T_pi+ = 118, 162, and 239 MeV using the Large Acceptance Detector System (LADS). The nearly 4pi solid angle coverage of this detector minimizes...
Three-nucleon processes and the total pion absorbtion cross section in `3He. (1991)
Weber, P., Backenstoss, G., Izycki, M., Powers, R.J., Salvisberg, P., Steinacher, M., ...
12th Internat.Conf.on Particles and Nuclei, Cambridge, Mass., June 25-29, 1990
What is the mechanism for three-nucleon absorption of pions in `3He? (1989)
Backenstoss, G., Izycki, M., Powers, R., Salvisberg, P., Steinacher, M., Weber, P., ...
Physics Letters B, 222(1989) S.7-11
New pion-absorption modes observed from triple coincidences in `4He. (1988)
Backenstoss, G., Brodbeck, D., Izycki, M., Salvisberg, P., Steinacher, M., Weber, P., ...
Physical Reviw Letters, 61(1988) S.923-26
Bartsch, P., Baumann, D., Bermuth, J., Bohm, R., Bohinc, K., Bosnar, D., ...
In a p((e) over right arrow, e' p)pi(0) out-of-plane coincidence experiment at the three-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around...
Polarization transfer in the 4He(e,e'p)3H reaction
Dieterich, S., Bartsch, P., Baumann, D., Bermuth, J., Bohinc, K., Bohm, R., ...
Polarization transfer in the4He(e,e'p)3H reaction at a Q2 of 0.4 (GeV/c)2 was measured at the Mainz Microtron MAMI. The ratio of the transverse to the longitudinal polarization components of the...
Bartsch, P., Baumann, D., Bermuth, J., Bohm, R., Bohinc, K., Bosnar, D., ...
In a p((e) over right arrow, e' p)pi(0) out-of-plane coincidence experiment at the three-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around...
Polarization transfer in the 4He(e,e'p)3H reaction
Dieterich, S., Bartsch, P., Baumann, D., Bermuth, J., Bohinc, K., Bohm, R., ...
Polarization transfer in the4He(e,e'p)3H reaction at a Q2 of 0.4 (GeV/c)2 was measured at the Mainz Microtron MAMI. The ratio of the transverse to the longitudinal polarization components of the...