Uncertainty of polarized gluon distribution from prompt photon production
نویسندگان
چکیده
منابع مشابه
Uncertainty of polarized gluon distribution from prompt photon production
Constraint of prompt photon data on the polarized gluon distribution is discussed in terms of uncertainty estimation for polarized parton distribution functions (PDFs). By comparing between uncertainty of the double spin asymmetry AγLL and expected statistical errors at RHIC, we found that the gluon distribution is effectively constrained in the region 0.04 < x T < 0.2 with the data at transver...
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We analyze the capability of prompt photon production in pp and pp̄ collisions to constrain the gluon distribution of the proton, considering data from fixed-target experiments as well as collider measurements. Combined fits are performed to these large-pT direct-γ cross sections and lepton-proton deep-inelastic scattering data in the framework of nextto-leading order perturbative QCD. Special a...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2004
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2004.06.102