256 citations · 1.4k across the 24 of their papers we have counts for
24 papers
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…
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…
New analysis of tensor resonances measured at the COMPASS experiment
A. Jackura, C. Fernandez-Ramirez, M. Mikhasenko +232
We present a new amplitude analysis of the -wave in measured by COMPASS. Employing an analytical model based on the principles of the relativistic -mat…
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 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…
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…
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…
Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high
COMPASS Collaboration, C. Adolph, R. Akhunzyanov +207
We measured the longitudinal double spin asymmetries for single hadron muo-production off protons and deuterons at photon virtuality < 1(GeV/) for transve…
Resonance Production and S-wave in at 190 GeV/c
C. Adolph, R. Akhunzyanov, M. G. Alexeev +206
The COMPASS collaboration has collected the currently largest data set on diffractively produced final states using a negative pion beam of 190 GeV/c momentum impinging…
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…
The Spin Structure Function of the Proton and a Test of the Bjorken Sum Rule
C. Adolph, R. Akhunzyanov, M. G. Alexeev +203
New results for the double spin asymmetry and the proton longitudinal spin structure function are presented. They were obtained by the COMPASS collabora…
The COMPASS Setup for Physics with Hadron Beams
Ph. Abbon, C. Adolph, R. Akhunzyanov +228
The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with…
Odd and Even Partial Waves of and in at
C. Adolph, R. Akhunzyanov, M. G. Alexeev +205
Exclusive production of and has been studied with a beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal d…
Leading and Next-to-Leading Order Gluon Polarisation in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction
C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +217
The gluon polarisation in the nucleon was measured using open charm production by scattering 160 GeV/c polarised muons off longitudinally polarised protons or deuterons. The data w…
D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c
C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +217
The production of D* and D mesons in inelastic scattering of 160 GeV/c muons off a ^6LiD target has been investigated with the COMPASS spectrometer at CERN for 0.003 (GeV/c)^2 < Q^…
Leading order determination of the gluon polarisation from DIS events with high-p_T hadron pairs
C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +212
We present a determination of the gluon polarisation Delta g/g in the nucleon, based on the longitudinal double-spin asymmetry of DIS events with a pair of large transverse-momentu…
First Measurement of Chiral Dynamics in π^- γ-> π^- π^- π^+
M. G. Alekseev, V. Yu. Alexakhin, Yu. Alexandrov +202
The COMPASS collaboration at CERN has investigated the π^- γ-> π^- π^- π^+ reaction at center-of-momentum energy below five pion masses, sqrt(s) < 5 m(π), embedded in the Primakoff…
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…
Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS
The COMPASS Collaboration, M. Alekseev, V. Yu. Alexakhin +238
The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COM…
The Fast Read-out System for the MAPMTs of COMPASS RICH-1
C. Schill
A fast readout system for the upgrade of the COMPASS RICH detector has been developed and successfully used for data taking in 2006 and 2007. The new readout system for the multi-a…
Fast Photon Detection for Particle Identification with COMPASS RICH-1
F. Nerling
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 n…