https://doi.org/10.1140/epjc/s10052-023-12238-8
Regular Article - Theoretical Physics
Higgs boson pair production at NLO in the Powheg approach and the top quark mass uncertainties
1
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, C.P. 13, 00044, Frascati, Italy
2
CERN, Theoretical Physics Department, 1211, Geneva 23, Switzerland
3
Dipartimento di Matematica e Fisica, Università di Roma Tre and INFN, sezione di Roma Tre, 00146, Rome, Italy
4
Dipartimento di Fisica e Astronomia ’G. Galilei’, Università di Padova and INFN, sezione di Padova, 35131, Padua, Italy
Received:
5
October
2023
Accepted:
6
November
2023
Published online:
18
November
2023
We present a new Monte Carlo code for Higgs boson pair production at next-to-leading order in the Powheg-Box Monte Carlo framework. The code is based on analytic results for the two loop virtual corrections which include the full top quark mass dependence. This feature allows to freely assign the value of all input parameters, including the trilinear Higgs boson self coupling, as well as to vary the renormalization scheme employed for the top quark mass. We study the uncertainties due to the top-mass renormalization scheme allowing the trilinear Higgs boson self coupling to vary around its Standard Model value including parton shower effects. Results are presented for both inclusive and differential observables.
© The Author(s) 2023
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