Bottom quark mass effects in associated $WH$ production with $H \to b\bar{b}$ decay through NNLO QCD
| Autor: | Behring, Arnd, Bizon, Wojciech, Caola, Fabrizio, Melnikov, Kirill, Röntsch, Raoul |
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| Rok vydání: | 2020 |
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| Zdroj: | Phys. Rev. D 101, 114012 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.101.114012 |
| Popis: | We present a computation of NNLO QCD corrections to the production of a Higgs boson in association with a $W$ boson at the LHC followed by the decay of the Higgs boson to a $b\bar{b}$ pair. At variance with previous NNLO QCD studies of the same process, we treat $b$ quarks as massive. An important advantage of working with massive $b$ quarks is that it makes the use of flavor jet algorithms unnecessary and allows us to employ conventional jet algorithms to define $b$ jets. We compare NNLO QCD descriptions of the associated $WH(b\bar{b})$ production with massive and massless $b$ quarks and also contrast them with the results provided by parton showers. We find ${\cal O}(5\%)$ differences in fiducial cross sections computed with massless and massive $b$ quarks. We also observe that much larger differences between massless and massive results, as well as between fixed-order and parton-shower results, can arise in selected kinematic distributions. Comment: 30 pages, 9 figures |
| Databáze: | arXiv |
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