Newest COMPASS results on longitudinal and transverse nucleon spin structure
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چکیده
منابع مشابه
Spin Physics with COMPASS
COMPASS is a fixed target experiment at CERN studying the spin structure of the nucleon via deep inelastic muon-nucleon scattering. Hadron spectroscopy and structure are investigated using hadronic beams. The main goal of the muon program is the determination of the gluon helicity contribution, ∆G/G, to the nucleon spin. Experimentally this quantity is accessible via the measurement of double s...
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COMPASS is a high-energy physics experiment operating at the SPS at CERN. Wide physics program of the experiment comprises study of hadron structure and spectroscopy with high energy muon and hadrons beams. As for the muon-program, one of the important objectives of the COMPASS experiment is the exploration of the transverse spin structure of the nucleon via spin (in)dependent azimuthal asymmet...
متن کاملTransversity 1
Some general remarks on parton transverse spin distributions and transverse motions are presented. The issue of accessing experimental information on the transversity distributions hq1 is discussed. In particular direct information could be obtained from Drell-Yan processes with polarized protons and antiprotons (planned at GSI), while indirect information, coupling hq1 to the Collins fragmenta...
متن کاملTransverse Spin Effects at COMPASS
The investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. In the years 2002-2004 COMPASS took data scattering 160 GeV muons on a transversely polarized LiD target. In 2007, a transversely polarized NH3 target was used. Three different channels to access the transversity distribution function...
متن کاملPhysics Results from COMPASS
The COMPASS Experiment at the CERN SPS has a broad physics program focused on the nucleon spin structure and on hadron spectroscopy, using muon and hadron beams. Main objectives for the spin program with the muon beam are the direct measurement of the gluon contribution to the spin of the nucleon, semiinclusive measurements, and the measurement of the transverse spin distribution ∆Tq(x). The CO...
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تاریخ انتشار 2017