236 citations · 1.3k across the 22 of their papers we have counts for
16 papers · 1 filter
The exotic meson with and its decay into
M. G. Alexeev, G. D. Alexeev, A. Amoroso +192
We study the spin-exotic amplitude in single-diffractive dissociation of 190 GeV pions into using a hydrogen target and confirm the $π_1(1600) \to…
Probing transversity by measuring polarisation in SIDIS
M. G. Alexeev, G. D. Alexeev, A. Amoroso +196
Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SID…
Measurement of -weighted Sivers asymmetries in leptoproduction of hadrons
M. G. Alexeev, G. D. Alexeev, A. Amoroso +209
The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum , allow for the extraction of importan…
Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering
R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +223
We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/ polarized and beams of the CERN SPS impinging on…
K over K multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +207
The K over K multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction of the virtual-photon energy. The d…
First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
Aghasyan, R. Akhunzyanov, M. G. Alexeev +216
The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/, beam and a…
Interplay among transversity induced asymmetries in hadron leptoproduction
Compass Collaboration, C. Adolph, R. Akhunzyanov +206
In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhi…
Search for exclusive photoproduction of Z(3900) at COMPASS
C. Adolph, R. Akhunzyanov, M. G. Alexeev +205
A search for the exclusive production of the hadron by virtual photons has been performed in the channel . The data cover t…
Measurement of radiative widths of and
C. Adolph, R. Akhunzyanov, M. G. Alekseev +206
The COMPASS Collaboration at CERN has investigated the reaction embedded in the Primakoff reaction of pions scattering in the Coulom…
Transverse target spin asymmetries in exclusive muoproduction
C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +209
Exclusive production of mesons was studied at the COMPASS experiment by scattering 160 GeV/ muons off transversely polarised protons. Five single-spin and three double-spi…
Measurement of the Collins and Sivers asymmetries on transversely polarised protons
The COMPASS Collaboration, M. G. Alekseev
The Collins and Sivers asymmetries for charged hadrons produced in deeply inelastic scattering on transversely polarised protons have been extracted from the data collected in 2007…
The Spin-dependent Structure Function of the Proton g_1^p and a Test of the Bjorken Sum Rule
The COMPASS Collaboration, M. G. Alekseev
The inclusive double-spin asymmetry, A_1^p, has been measured at COMPASS in deepinelastic polarised muon scattering off a large polarised NH3 target. The data, collected in the yea…
Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering
COMPASS Collaboration, M. Alekseev
We present a LO evaluation of helicity densities of valence, Δu_v+Δd_v, non-strange sea, Δ\bar{u}+Δ\bar{d}, and strange quarks, Δs (assumed to be equal to Δ\bar{s}). They have been…
A new measurement of the Collins and Sivers asymmetries on a transversely polarised deuteron target
Compass, :, E. S. Ageev
New high precision measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarised 6LiD target are…
Spin physics with antiprotons
M. Maggiora
New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessin…
Measurements of the reaction of antiproton annihilation at rest at three hydrogen target densities
OBELIX Collaboration, V. Alberico, A. Bertin
The proton-antiproton annihilation at rest into the final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressu…