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First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
Bakur Parsamyan
The COMPASS experiment at CERN, as part of its programme addresses the exploration of the transverse spin structure of the nucleon by measuring spin (in)dependent azimuthal asymmet…
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…
First measurement of the Sivers asymmetry for gluons from SIDIS data
C. Adolph, M. Aghasyan, R. Akhunzyanov +223
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal…
Final COMPASS results on the deuteron spin-dependent structure function and the Bjorken sum rule
C. Adolph, M. Aghasyan, R. Akhunzyanov +223
Final results are presented from the inclusive measurement of deep-inelastic polarised-muon scattering on longitudinally polarised deuterons using a LiD target. The data were t…
Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS
C. Adolph, M. Aghasyan, R. Akhunzyanov +223
Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions…
Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons
C. Adolph, M. Aghasyan, R. Akhunzyanov +221
Single hadron azimuthal asymmetries of positive and negative hadrons produced in muon semi-inclusive deep inelastic scattering off longitudinally polarised deuterons are determined…
Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target
C. Adolph, J. Agarwala, M. Aghasyan +223
Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. The results are presented in three-dimensional bins of the Bjorken scaling variable…
Exclusive meson muoproduction on transversely polarised protons
C. Adolph, J. Agarwala, M. Aghasyan +225
Exclusive production of mesons was studied at the COMPASS experiment by scattering muons off transversely polarised protons. Five single-spin and…
Multiplicities of charged pions and unidentified charged hadrons from deep-inelastic scattering of muons off an isoscalar target
C. Adolph, J. Agarwala, M. Aghasyan +224
Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable , the relative virtual-photo…
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…
A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
C. Adolph, R. Akhunzyanov, M. G. Alekseev +217
A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH) targets are presented. They provid…
Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons
C. Adolph, R. Akhunzyanov, M. G. Alekseev +217
Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS muon beam at …
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 Cross Section for High-p_T Hadron Production in Scattering of 160 GeV/c Muons off Nucleons
C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +209
The differential cross section for production of charged hadrons with high transverse momenta in scattering of 160\,GeV/ muons off nucleons at low photon virtualities has been m…