Parton distribution functions and benchmark cross sections at next-to-next-to-leading order

被引：243
作者：
Alekhin, S. [1 ,2 ]
Bluemlein, J. [1 ]
Moch, S. [1 ]
机构：
[1] Deutsch Elektronensynchrotron DESY, D-15738 Zeuthen, Germany
[2] Inst High Energy Phys, Protvino 142281, Moscow Region, Russia
来源：
PHYSICAL REVIEW D | 2012年 / 86卷 / 05期
关键词：
DEEP-INELASTIC-SCATTERING; DEUTERON STRUCTURE FUNCTIONS; OPERATOR MATRIX-ELEMENTS; D-ASTERISK(+/-) MESON PRODUCTION; HIGH STATISTICS MEASUREMENT; NUCLEON STRUCTURE FUNCTIONS; 3-LOOP SPLITTING FUNCTIONS; HEAVY FLAVOR CONTRIBUTIONS; STRONG-COUPLING CONSTANT; ASYMPTOTIC VALUES Q(2);
D O I：
10.1103/PhysRevD.86.054009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a determination of parton distribution functions (ABM11) and the strong coupling constant alpha(s) at next-to-leading order and next-to-next-to-leading order (NNLO) in QCD based on world data for deep-inelastic scattering and fixed-target data for the Drell-Yan process. The analysis is performed in the fixed-flavor number scheme for n(f) = 3, 4, 5 and uses the (MS) over bar scheme for alpha(s) and the heavy-quark masses. At NNLO we obtain the value alpha(s) (M-Z) = 0.1134 +/- 0.0011. The fit results are used to compute benchmark cross sections at hadron colliders to NNLO accuracy and to compare to data from the LHC.
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页数：49
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