Large-n(f) contributions to the four-loop splitting functions in QCD
Large-n(f) contributions to the four-loop splitting functions in QCD
复制标题
大 n(f) 对 QCD 中四环分裂函数的贡献
DOI:
10.1016/j.nuclphysb.2016.12.012
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
J. Vermaseren
中科院分区:
文献类型:
--
作者:
J. Davies;A. Vogt;B. Ruijl;Takahiro Ueda;J. Vermaseren
We have computed the fourth-order n f 2 contributions to all three non-singlet quark–quark splitting functions and their four n f 3 flavour-singlet counterparts for the evolution of the parton distributions of hadrons in perturbative QCD with n f effectively massless quark flavours. The analytic form of these functions is presented in both Mellin N-space and momentum-fraction x-space; the large-x and small-x limits are discussed. Our results agree with all available predictions derived from lower-order information. The large-x limit of the quark–quark cases provides the complete n f 2 part of the four-loop cusp anomalous dimension which agrees with two recent partial computations.
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DOI:
10.1016/j.cpc.2010.04.009
发表时间:
2010
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
M. Tentyukov;J. A. M. Vermaseren
通讯作者:
J. A. M. Vermaseren
影响因子:
5.4
作者:
C. Anzai;A. Hasselhuhn;M. Höschele;J. Hoff;W. Kilgore;M. Steinhauser;T. Ueda
通讯作者:
T. Ueda
影响因子:
5.4
作者:
Almasy A
通讯作者:
Almasy A
DOI:
10.48550/arxiv.1012.3352
发表时间:
2010
期刊:
--
影响因子:
--
作者:
Almasy A
通讯作者:
Almasy A