Probing Polarized Gluon Distributions through Charmed Hadron Production in Polarized pp Collisions at BNL–RHIC Energy
نویسندگان
چکیده
In order to extract information about behavior of polarized gluons in the nucleon, charmed hadron productions, i.e. D meson and Λ+c baryon productions, are studied in polarized pp reactions at BNL-RHIC energy. For these processes, the spin correlation asymmetry ALL between the target proton and the produced charmed hadron, and its statistical sensitivity δALL are calculated as functions of transverse momentum pT and pseudo-rapidity η of the produced charmed hadron. From analyses on these processes, we find that the η distribution of ALL is quite effective for distinguishing the model of polarized gluons as well as the model of spin-dependent fragmentation functions. PACS number(s): 13.85.Ni. 13.88.+e, 14.20.Lq, 14.40.Lb,
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تاریخ انتشار 2003