Parton Distributions in the Virtual Photon Target and Factorization Scheme Dependence
نویسندگان
چکیده
We investigate parton distributions in the virtual photon target, both polarized and unpolarized, up to the next-leading order (NLO) in QCD. Parton distributions can be predicted completely up to NLO, but they are factorization-scheme-dependent. We analyze parton distributions in several factorization schemes and discuss their scheme dependence. Particular attentions are paid to the axial anomaly effect on the first moments of the polarized quark parton distributions, and also to the large-x behaviors of polarized and unpolarized parton distributions. YNU-HEPTh-00-101
منابع مشابه
Factorization scheme dependence of parton distributions in the polarized virtual photon †
Spin-dependent parton distributions in the polarized virtual photon are investigated in QCD up to the next-to-leading order (NLO). In the case Λ 2 P 2 Q , where Q 2 ( P ) is the mass squared of the probe (target) photon, parton distributions can be predicted completely up to the NLO, but they are factorization-scheme-dependent. Parton distributions are analyzed in four different factorization s...
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