The double fermionic contribution to the four-loop quark-to-gluon splitting function
The double fermionic contribution to the four-loop quark-to-gluon splitting function
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双费米子对四环夸克-胶子分裂函数的贡献
DOI:
10.1016/j.physletb.2023.138351
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发表时间:
2024
影响因子:
4.4
通讯作者:
Falcioni G
中科院分区:
文献类型:
--
作者:
Falcioni G
We have computed the first 30 even-N moments for the double fermionic (n f 2) part of the quark-to-gluon splitting function P gq at the fourth order of perturbative QCD via the renormalization of off-shell operator matrix elements. From these results we have determined the all-N form, and hence the exact x-space expression, using systems of Diophantine equations for its coefficients. The dominant and subdominant leading small-x n f 2 contributions to P gq (3)(x) are of the form x− 1 ln x and ln 4 x, respectively; the leading large-x term is ln 4(1− x). The coefficient of the first of these is new, the other two agree with results obtained before and thus provide checks of our results.
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DOI:
10.1016/j.physletb.2017.05.001
发表时间:
2017
期刊:
ArXiv
影响因子:
--
作者:
J. Blümlein;Carsten Schneider
通讯作者:
Carsten Schneider
DOI:
10.1016/j.nuclphysb.2016.12.012
发表时间:
2016
期刊:
Nuclear Physics
影响因子:
--
作者:
J. Davies;A. Vogt;B. Ruijl;Takahiro Ueda;J. Vermaseren
通讯作者:
J. Vermaseren
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
M. Ciafaloni;D. Colferai
通讯作者:
D. Colferai
影响因子:
4.4
作者:
Moch S.;Ruijl B.;Ueda T.;Vermaseren J.A.M.;Vogt A.
通讯作者:
Vogt A.
影响因子:
6.3
作者:
S. G. Gorishny;S. A. Larin;L. Surguladze;F. Tkachov
通讯作者:
F. Tkachov