Gluon fusion production at NLO: merging the transverse momentum and the high-energy expansions

نویسندگان

چکیده

A bstract The virtual corrections to gg ? HH and ZH are analytically evaluated combining an expansion in the small transverse momentum of final particles with valid at high energies. two methods describe complementary regions phase space we merge their results, extending range validity both expansions using Padé approximants. We show that this approach can reproduce available numerical results retaining exact top quark mass dependence accuracy below 1% level. Our allow a fast flexible evaluation considered processes. Furthermore, they different renormalisation schemes mass.

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ژورنال

عنوان ژورنال: Journal of High Energy Physics

سال: 2022

ISSN: ['1127-2236', '1126-6708', '1029-8479']

DOI: https://doi.org/10.1007/jhep07(2022)069