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Berlin 2005 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 8: Elektromagnetische und Hadronische Proben

HK 8.4: Talk

Friday, March 4, 2005, 17:15–17:30, TU MA001

Measurement of Asymmetries in high-pT Single Hadron Production at COMPASS  — •R. Kuhn, M. Becker, R. De Masi, A.-M. Dinkelbach, J. M. Friedrich, S. Gerassimov, B. Grube, B. Ketzer, I. Konorov, T. Nagel, S. Paul, L. Schmitt, and Q. Weitzel — TU München, Physik-Department E18

During the three beamtimes 2002–2004 COMPASS has measured hard scattering processes of polarized muons off a polarized 6LiD target. The spin asymmetry of the hadron production cross section at high transverse momenta is related to the polarized gluon density Δ G of the nucleon. A first analysis of this asymmetry for single hadrons at low Q2 and small xBj will be presented.

 This work is supported by the BMBF and the Maier-Leibnitz-Labor, Garching.

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