NNLOPS description of the H$\to\! b\bar{b}$ decay with MINLO
| Autor: | Bizon, Wojciech, Re, Emanuele, Zanderighi, Giulia |
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| Rok vydání: | 2019 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP06(2020)006 |
| Popis: | 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$\to\! b\bar{b}$ 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. Comment: 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) |
| Databáze: | arXiv |
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