کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1852972 1034002 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Higher order QCD corrections to charged-lepton deep-inelastic scattering and global fits of parton distributions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Higher order QCD corrections to charged-lepton deep-inelastic scattering and global fits of parton distributions
چکیده انگلیسی
We study the perturbative QCD corrections to the heavy-quark structure functions of charged-lepton deep-inelastic scattering and their impact on global fits of parton distributions. We include the logarithmically enhanced terms near threshold due to soft gluon resummation in the QCD corrections at next-to-next-to-leading order. We demonstrate that this approximation is sufficient to describe the available HERA data in most parts of the kinematic region. The threshold-enhanced next-to-next-to-leading order corrections improve the agreement between predictions based on global fits of the parton distribution functions and the HERA collider data even in the small-x region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 672, Issue 2, 16 February 2009, Pages 166-171
نویسندگان
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