Recent gluon polarization results from COMPASS

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• 作者：C. Quintans
• 刊名：Nuclear Physics B - Proceedings Supplements
• 出版年：2007
• 期刊代码：46_09205632
• 类别：ph
• 出版时间：February 2007
• 卷：164
• 期：Complete
• 页码：17-21
• 文件大小：448 K

摘要

One of the main goals of the COMPASS experiment at CERN is the measurement of the gluon polarization in the nucleon, ΔG, by scattering of 160 GeV/c polarized muons on a polarized ⁶LiD target. This quantity is experimentally accessible via the photon-gluon fusion process, tagged either by charmed mesons production or by high p_T hadron pairs production. The status of these two analyses is presented. Preliminary results obtained from the 2002/03 data samples on the D⁰ and the D^*± channels are shown. The high p_T hadron pairs, produced at , were also analysed, and the measured ΔG/G values are presented here.