169 citations · 3.2k across the 78 of their papers we have counts for
48 papers · 1 filter
Azimuthal transverse single-spin asymmetries of inclusive jets and identified hadrons within jets from polarized collisions at = 200 GeV
STAR Collaboration, M. S. Abdallah, B. E. Aboona +357
The STAR Collaboration reports measurements of the transverse single-spin asymmetries, , for inclusive jets and identified `hadrons within jets' production at midrapidity from…
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…
Invariant Jet Mass Measurements in Collisions at GeV at RHIC
STAR Collaboration, M. S. Abdallah, J. Adam +377
We present the first inclusive measurements of the invariant and SoftDrop jet mass in proton-proton collisions at GeV at STAR. The measurements are fully corrected f…
Measurement of transverse single-spin asymmetries of and electromagnetic jets at forward rapidity in 200 and 500 GeV transversely polarized proton-proton collisions
STAR Collaboration, J. Adam, L. Adamczyk +359
The STAR Collaboration reports measurements of the transverse single-spin asymmetry (TSSA) of inclusive at center-of-mass energies () of 200 GeV and 500 GeV in trans…
Spin Density Matrix Elements in Exclusive Meson Muoproduction
M. G. Alexeev, G. D. Alexeev, A. Amoroso +197
We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive meson muoproduction on the proton at COMPASS using 160 GeV/ polarised and $ μ^{…
Results on Total and Elastic Cross Sections in Proton-Proton Collisions at GeV
STAR Collaboration, J. Adam, L. Adamczyk +352
We report results on the total and elastic cross sections in proton-proton collisions at GeV obtained with the Roman Pot setup of the STAR experiment at the Relativi…
Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS
J. Agarwala, M. G. Alexeev, G. D. Alexeev +203
Hadron leptoproduction in Semi-Inclusive measurements of Deep-Inelastic Scattering (SIDIS) on unpolarised nucleons allows one to get information on the intrinsic transverse momentu…
Measurement of the cross section for hard exclusive leptoproduction
M. G. Alexeev, G. D. Alexeev, A. Amoroso +199
We report on a measurement of hard exclusive muoproduction on the proton by COMPASS using 160 GeV/ polarised and beams of the CERN SPS impinging on a liquid hy…
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…
Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)
B. Adams, C. A. Aidala, R. Akhunzyanov +263
A New QCD facility at the M2 beam line of the CERN SPS COMPASS++/AMBER
Light isovector resonances in at 190 GeV/
M. Aghasyan, M. G. Alexeev, G. D. Alexeev +221
We have performed the most comprehensive resonance-model fit of states using the results of our previously published partial-wave analysis (PWA) of a large data set of…
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
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…
Longitudinal double-spin asymmetry and spin-dependent structure function of the proton at small values of and
M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +225
We present a precise measurement of the proton longitudinal double-spin asymmetry and the proton spin-dependent structure function at photon virtualitie…
Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering
M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +227
A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaborat…
Search for muoproduction of at COMPASS and indication of a new state
M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +224
We have searched for exclusive production of exotic charmonia in the reaction using COMPASS data collected with incoming muons of…
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…