Köln 2004 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 17: Electromagnetic and Hadronic Probes II
HK 17.5: Talk
Tuesday, March 9, 2004, 17:00–17:15, B
Semi-inclusive spin asymmetry from COMPASS — •Alexander Korzenev — Institute for Nuclear Physics, Mainz University
In view of the spin crisis in the QPM the understanding of the spin structure of the nucleon is the one of the most interesting issues in hadron physics. The investigation of this subject is the primary goal of the COMPASS experiment at CERN. Data obtained by scattering polarized muons of 160 GeV off a polarized 6LiD target will be presented.
In addition to the scattered muon, hadrons are also detected allowing a separation of the spin contributions from different quark and antiquark flavors. The covered kinematic range is Q2 > 1 GeV2 and 0.003 < xBj < 0.2.