We present an event generator that describes the Higgs boson decay into b-quarks at next-to-next-to-leading-order (NNLO) in QCD and allows for a consistent matching to parton shower. For this purpose, we work within the POWHEG framework and employ the MiNLO method to produce an NNLO-accurate H →bb¯ event sample which can further be interfaced with a generic Higgs boson production mode. The resulting events, that combine Higgs production and decay, can be matched to parton shower by means of a vetoed shower. As an example, we present a short phenomenological study for associated Higgs production (HZ) and vector boson fusion (VBF) processes. We release the source code that was used to obtain these results as an h_bbg user process in POWHEG-BOX-V2. We also provide tools that enable interfacing the decay events with events for an arbitrary Higgs production mode and subsequent matching of the combined Les Houches (LH) events with a parton shower.

Bizon, W., Re, E., Zanderighi, G. (2020). NNLOPS description of the H→ bb¯ decay with MiNLO. JOURNAL OF HIGH ENERGY PHYSICS, 2020(6) [10.1007/JHEP06(2020)006].

NNLOPS description of the H→ bb¯ decay with MiNLO

Re E.;Zanderighi G.
2020

Abstract

We present an event generator that describes the Higgs boson decay into b-quarks at next-to-next-to-leading-order (NNLO) in QCD and allows for a consistent matching to parton shower. For this purpose, we work within the POWHEG framework and employ the MiNLO method to produce an NNLO-accurate H →bb¯ event sample which can further be interfaced with a generic Higgs boson production mode. The resulting events, that combine Higgs production and decay, can be matched to parton shower by means of a vetoed shower. As an example, we present a short phenomenological study for associated Higgs production (HZ) and vector boson fusion (VBF) processes. We release the source code that was used to obtain these results as an h_bbg user process in POWHEG-BOX-V2. We also provide tools that enable interfacing the decay events with events for an arbitrary Higgs production mode and subsequent matching of the combined Les Houches (LH) events with a parton shower.
Articolo in rivista - Articolo scientifico
NLO Computations; QCD Phenomenology;
English
Gold Open Access• Green Open Access
Bizon, W., Re, E., Zanderighi, G. (2020). NNLOPS description of the H→ bb¯ decay with MiNLO. JOURNAL OF HIGH ENERGY PHYSICS, 2020(6) [10.1007/JHEP06(2020)006].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/347268
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