Heavy quarks in deep-inelastic scattering

被引：209

作者：

Forte, Stefano ^{[1
,2
]}

Laenen, Eric ^{[3
,4
,5
]}

Nason, Paolo ^{[6
]}

Rojo, Juan ^{[2
]}

机构：

[1] Univ Milan, Dipartimento Fis, I-20122 Milan, Italy

[2] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[3] Univ Amsterdam, ITFA, NL-1018 XE Amsterdam, Netherlands

[4] Univ Utrecht, ITF, NL-3584 CE Utrecht, Netherlands

[5] Nikhef Theory Grp, NL-1098 XG Amsterdam, Netherlands

[6] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy

来源：

NUCLEAR PHYSICS B | 2010年 / 834卷 / 1-2期

关键词：

H1 VERTEX DETECTOR; PARTON DISTRIBUTIONS; CHARM ELECTROPRODUCTION; D-ASTERISK(+/-) MESON; FLAVOR PRODUCTION; QCD CORRECTIONS; NNLO EVOLUTION; ORDER; Q(2); COEFFICIENT;

D O I：

10.1016/j.nuclphysb.2010.03.014

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss a general framework for the inclusion of heavy quark mass contributions to deep-inelastic structure functions and their perturbative matching to structure functions computed in variable-mass schemes. Our approach is based on the so-called FONLL method, previously introduced and applied to heavy quark hadroproduction and photoproduction. We define our framework, provide expressions up to second order in the strong coupling, and use them to construct matched expressions for structure functions up to NNLO. After checking explicitly the consistency of our results, we perform a study of the phenomenological impact of heavy quark terms, and compare results obtained at various perturbative orders, and with various prescriptions for the treatment of subleading terms, specifically those related to threshold behaviour. We also consider the heavy quark structure function F-2c and discuss issues related to the presence of mass singularities in their coefficient functions. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：116 / 162

页数：47

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