Header

UZH-Logo

Maintenance Infos

Light-quark two-loop corrections to heavy-quark pair production in the gluon fusion channel


Bonciani, R; Ferroglia, A; Gehrmann, T; Manteuffel, A; Studerus, C (2013). Light-quark two-loop corrections to heavy-quark pair production in the gluon fusion channel. Journal of High Energy Physics, 2013:38.

Abstract

We calculate the two-loop corrections to heavy-quark pair production in the gluon fusion channel which arise from diagrams involving a closed light-quark loop. The calculation is carried out by keeping the exact dependence on the heavy-quark mass. The analytic results are written in terms of logarithms, classical polylogarithms Li_n (n=2,3,4), and genuine multiple polylogarithms Li_{2,2}. The functional arguments are rational expressions of two independent external invariants and they are chosen in such a way that the functions are real in all the physical phase-space points. Through systematic changes in the functional basis, we obtain expansions of the results in both the production threshold and small mass limits.

Abstract

We calculate the two-loop corrections to heavy-quark pair production in the gluon fusion channel which arise from diagrams involving a closed light-quark loop. The calculation is carried out by keeping the exact dependence on the heavy-quark mass. The analytic results are written in terms of logarithms, classical polylogarithms Li_n (n=2,3,4), and genuine multiple polylogarithms Li_{2,2}. The functional arguments are rational expressions of two independent external invariants and they are chosen in such a way that the functions are real in all the physical phase-space points. Through systematic changes in the functional basis, we obtain expansions of the results in both the production threshold and small mass limits.

Statistics

Citations

Dimensions.ai Metrics
29 citations in Web of Science®
32 citations in Scopus®
24 citations in Microsoft Academic
Google Scholar™

Altmetrics

Downloads

68 downloads since deposited on 11 Feb 2014
17 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2013
Deposited On:11 Feb 2014 08:22
Last Modified:30 Jul 2020 12:08
Publisher:Springer
ISSN:1029-8479
OA Status:Green
Free access at:Related URL. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP12(2013)038
Related URLs:http://arxiv.org/abs/1309.4450

Download

Green Open Access

Download PDF  'Light-quark two-loop corrections to heavy-quark pair production in the gluon fusion channel'.
Preview
Content: Published Version
Filetype: PDF
Size: 278kB
View at publisher