Virtual corrections to gg → ZH in the high-energy and large-mt limits

A bstract We compute the next-to-leading order virtual corrections to the partonic cross-section of the process gg → ZH , in the high-energy and large- m t limits. We use Padé approximants to increase the radius of convergence of the high-energy expansion in m t 2 / s , m t 2 / t and m t 2 / u and s...

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Bibliographic Details
Published in:The journal of high energy physics 2021-03, Vol.2021 (3), Article 34
Main Authors: Davies, Joshua, Mishima, Go, Steinhauser, Matthias
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Cross-sections
Elementary Particles
Form factors
High energy physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativity Theory
String Theory
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Summary:A bstract We compute the next-to-leading order virtual corrections to the partonic cross-section of the process gg → ZH , in the high-energy and large- m t limits. We use Padé approximants to increase the radius of convergence of the high-energy expansion in m t 2 / s , m t 2 / t and m t 2 / u and show that precise results can be obtained down to energies which are fairly close to the top quark pair threshold. We present results both for the form factors and the next-to-leading order virtual cross-section.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2021)034