gg → Z Z: analytic two-loop results for the low- and high-energy regions

gg → Z Z: analytic two-loop results for the low- and high-energy regions

Abstract We compute next-to-leading order virtual two-loop corrections to the process gg → Z Z in the low- and high-energy limits, considering the contributions with virtual top quarks. Analytic results for all 20 form factors are presented including expansion terms up to 1 / m t 12 $$ 1/{m}_t^{12}...

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Bibliographic Details
Main Authors: Joshua Davies, Go Mishima, Matthias Steinhauser, David Wellmann
Format: Article
Language:English
Published: SpringerOpen 2020-04-01
Series:Journal of High Energy Physics
Subjects:
NLO Computations
QCD Phenomenology
Online Access:http://link.springer.com/article/10.1007/JHEP04(2020)024
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spelling doaj-683ae7dff53b401583a59af98260aa8a2020-11-25T02:28:51ZengSpringerOpenJournal of High Energy Physics1029-84792020-04-012020413010.1007/JHEP04(2020)024gg → Z Z: analytic two-loop results for the low- and high-energy regionsJoshua Davies0Go Mishima1Matthias Steinhauser2David Wellmann3Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)Abstract We compute next-to-leading order virtual two-loop corrections to the process gg → Z Z in the low- and high-energy limits, considering the contributions with virtual top quarks. Analytic results for all 20 form factors are presented including expansion terms up to 1 / m t 12 $$ 1/{m}_t^{12} $$ and m t 32 $$ {m}_t^{32} $$ . We use a Padé approximation procedure to extend the radius of convergence of the high-energy expansion and apply this approach to the finite virtual next-to-leading order corrections.http://link.springer.com/article/10.1007/JHEP04(2020)024NLO ComputationsQCD Phenomenology
collection DOAJ
language English
format Article
sources DOAJ
author Joshua Davies
Go Mishima
Matthias Steinhauser
David Wellmann
spellingShingle Joshua Davies
Go Mishima
Matthias Steinhauser
David Wellmann
gg → Z Z: analytic two-loop results for the low- and high-energy regions
Journal of High Energy Physics
NLO Computations
QCD Phenomenology
author_facet Joshua Davies
Go Mishima
Matthias Steinhauser
David Wellmann
author_sort Joshua Davies
title gg → Z Z: analytic two-loop results for the low- and high-energy regions
title_short gg → Z Z: analytic two-loop results for the low- and high-energy regions
title_full gg → Z Z: analytic two-loop results for the low- and high-energy regions
title_fullStr gg → Z Z: analytic two-loop results for the low- and high-energy regions
title_full_unstemmed gg → Z Z: analytic two-loop results for the low- and high-energy regions
title_sort gg → z z: analytic two-loop results for the low- and high-energy regions
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2020-04-01
description Abstract We compute next-to-leading order virtual two-loop corrections to the process gg → Z Z in the low- and high-energy limits, considering the contributions with virtual top quarks. Analytic results for all 20 form factors are presented including expansion terms up to 1 / m t 12 $$ 1/{m}_t^{12} $$ and m t 32 $$ {m}_t^{32} $$ . We use a Padé approximation procedure to extend the radius of convergence of the high-energy expansion and apply this approach to the finite virtual next-to-leading order corrections.
topic NLO Computations
QCD Phenomenology
url http://link.springer.com/article/10.1007/JHEP04(2020)024
work_keys_str_mv AT joshuadavies ggzzanalytictwoloopresultsforthelowandhighenergyregions
AT gomishima ggzzanalytictwoloopresultsforthelowandhighenergyregions
AT matthiassteinhauser ggzzanalytictwoloopresultsforthelowandhighenergyregions
AT davidwellmann ggzzanalytictwoloopresultsforthelowandhighenergyregions
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