NNLOPS description of the H$\to\! b\bar{b}$ decay with MINLO
Abstract
We present an event generator that describes the Higgs boson decay into -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 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 \text{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.
Cite
@article{arxiv.1912.09982,
title = {NNLOPS description of the H$\to\! b\bar{b}$ decay with MINLO},
author = {Wojciech Bizon and Emanuele Re and Giulia Zanderighi},
journal= {arXiv preprint arXiv:1912.09982},
year = {2020}
}
Comments
28 pages, 8 figures. Few changes: improved few sentences throughout the paper, added references, added 1 plot in section 2.1, added 2 plots (1 figure) in section 4.2, removed fixed-order results from HZ plots, added one appendix. Now it matches the version published in JHEP (HZ plots rebinned on arxiv version)