Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Austregesilo, A, ...
The longitudinal polarisation transfer from muons to lambda and anti-lambda hyperons, D_LL, has been studied in deep inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment...
Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering (2009)
Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Austregisilio, A, ...
We present a LO evaluation of helicity densities of valence, \Delta u_v+\Delta d_v, non-strange sea, \Delta\bar{u}+\Delta\bar{d}, and strange quarks, \Delta s (assumed to be equal to \Delta\bar{s})....
Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering (2009)
We present a LO evaluation of helicity densities of valence, \Delta u_v+\Delta d_v, non-strange sea, \Delta\bar{u}+\Delta\bar{d}, and strange quarks, \Delta s (assumed to be equal to \Delta\bar{s})....
Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production (2008)
Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
We present the first measurement of the gluon polarisation in the nucleon based on the photon-gluon fusion process tagged by charmed meson production and decay to charged K and pi. The data were...
The Polarised Valence Quark Distribution from semi-inclusive DIS (2007)
Collaboration, COMPASS, Alekseev, M.
The semi-inclusive difference asymmetry A^{h^{+}-h^{-}} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160...
The Polarised Valence Quark Distribution from semi-inclusive DIS (2007)
Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The semi-inclusive difference asymmetry A^{h+ - h-} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160 GeV...
Double spin asymmetry in exclusive $\rho^0$ muoproduction at COMPASS (2007)
Alexakhin, V Yu, Alekseev, M, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is...
Double spin asymmetry in exclusive rho^0 muoproduction at COMPASS (2007)
Collaboration, COMPASS, Alekseev, M.
The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is...
Fast photon detection for the COMPASS RICH detector (2006)
Schill, C, Abbon, P, Alekseev, M, Angerer, H, Apollonio, M, Birsa, R, ...
The COMPASS experiment at the SPS accelerator at CERN uses a large scale Ring Imaging CHerenkov detector (RICH) to identify pions, kaons and protons in a wide momentum range. For the data taking in...
Fast Photon Detection for Particle Identification with COMPASS RICH-1 (2006)
Abbon, P, Alekseev, M, Angerer, H, Apollonio, M, Birsa, R, Bordalo, P, ...
Particle identification at high rates is an important challenge for many current and future high-energy physics experiments. The upgrade of the COMPASS RICH-1 detector requires a new technique for...