STUDY OF THE NUCLEON SPIN STRUCTURE BY THE DRELL-YAN PROCESS IN THE COMPASS-II EXPERIMENT

被引：0
作者：
Quaresma, Marcia [1 ]
机构：
[1] LIP Lab Instrumentacao & Fis Expt Particulas, P-1000149 Lisbon, Portugal
来源：
INTERNATIONAL MEETING EXCITED QCD | 2012年 / 5卷 / 04期
关键词：
D O I：
10.5506/APhysPolBSupp.5.1163
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The Parton Distribution Functions (PDFs) and the spin structure of the nucleon are important topics studied by the COMPASS experiment. The Drell-Yan (DY) process will be used in the future COMPASS-II measurements to access the Transverse Momentum Dependent PDFs (TMD PDFs). Studying the angular distributions of dimuons from the DY reactions with a negative pion beam with 190 GeV/c momentum and a transversely polarised proton target, we will be able to extract the azimuthal spin asymmetries and to access the various TMD PDFs, such as Sivers and Boer-Mulders functions. The start of the COMPASS DY experiment is scheduled for 2014. Three beam tests have been already performed, one of them in 2009 using a prototype hadron absorber downstream of the target, to understand the background reduction factors and the spectrometer response, and also to verify our results from Monte Carlo simulations. COMPASS aims at performing the first DY experiment with a transversely polarised target. DOI:10.5506/APhysPolBSupp.5.1163
引用
收藏
页码：1163 / 1169
页数：7
相关论文
共 11 条
  • [1] The COMPASS experiment at CERN
    Abbon, P.
    Albrecht, E.
    Alexakhin, V. Yu.
    Alexandrov, Yu.
    Alexeev, G. D.
    Alekseev, M. G.
    Amoroso, A.
    Angerer, H.
    Anosov, V. A.
    Badelek, B.
    Balestra, F.
    Ball, J.
    Barth, J.
    Baum, G.
    Becker, M.
    Bedfer, Y.
    Berglund, P.
    Bernet, C.
    Bertini, R.
    Bettinelli, M.
    Birsa, R.
    Bisplinghoff, J.
    Bordalo, P.
    Bosteels, M.
    Bradamante, F.
    Braem, A.
    Bravar, A.
    Bressan, A.
    Brona, G.
    Burtin, E.
    Bussa, M. P.
    Bytchkov, V. N.
    Chalifour, M.
    Chapiro, A.
    Chiosso, M.
    Ciliberti, P.
    Cicuttin, A.
    Colantoni, M.
    Colavita, A. A.
    Costa, S.
    Crespo, M. L.
    Cristaudo, P.
    Dafni, T.
    d'Hose, N.
    Dalla Torre, S.
    d'Ambrosio, C.
    Das, S.
    Dasgupta, S. S.
    Delagnes, E.
    De Masi, R.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2007, 577 (03) : 455 - 518
  • [2] Sivers effect in Drell-Yan processes
    Anselmino, M.
    Boglione, M.
    D'Alesio, U.
    Melis, S.
    Murgia, F.
    Prokudin, A.
    [J]. PHYSICAL REVIEW D, 2009, 79 (05):
  • [3] Dilepton production from polarized hadron hadron collisions
    Arnold, S.
    Metz, A.
    Schlegel, M.
    [J]. PHYSICAL REVIEW D, 2009, 79 (03):
  • [4] Transverse momentum dependent parton distribution and fragmentation functions with QCD evolution
    Aybat, S. Mert
    Rogers, Ted C.
    [J]. PHYSICAL REVIEW D, 2011, 83 (11):
  • [5] Collins J.C., 2008, LIGHT CONE 2008
  • [6] Leading-twist single-transverse-spin asymmetries: Drell-Yan and deep-inelastic scattering
    Collins, JC
    [J]. PHYSICS LETTERS B, 2002, 536 (1-2) : 43 - 48
  • [7] EXPERIMENTAL-STUDY OF MUON PAIRS PRODUCED BY 252-GEV PIONS ON TUNGSTEN
    CONWAY, JS
    ADOLPHSEN, CE
    ALEXANDER, JP
    ANDERSON, KJ
    HEINRICH, JG
    PILCHER, JE
    POSSOZ, A
    ROSENBERG, EI
    BIINO, C
    GREENHALGH, JF
    LOUIS, WC
    MCDONALD, KT
    PALESTINI, S
    SHOEMAKER, FC
    SMITH, AJS
    [J]. PHYSICAL REVIEW D, 1989, 39 (01): : 92 - 122
  • [8] FALCIANO S, 1986, Z PHYS C PART FIELDS, V31, P513, DOI 10.1007/BF01551072
  • [9] Polarization effects in Drell-Yan processes
    Sissakian, A. N.
    Shevchenko, O. Yu.
    Nagaitsev, A. P.
    Ivanov, O. N.
    [J]. PHYSICS OF PARTICLES AND NUCLEI, 2010, 41 (01) : 64 - 100
  • [10] The COMPASS Collaboration, 2010, CERNSPSC2010014 COMP
12