NNLO QCD corrections to associated W H production and H → b ¯ b decay
We present a computation of the next-to-next-to-leading-order (NNLO) QCD corrections to the production of a Higgs boson in association with a W boson at the LHC and the subsequent decay of the Higgs boson into a bb¯ pair, treating the b quarks as massless. We consider various kinematic distributions...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2018
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| _version_ | 1797053419819630592 |
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| author | Caola, F Luisoni, G Melnikov, K Roentsch, R |
| author_facet | Caola, F Luisoni, G Melnikov, K Roentsch, R |
| author_sort | Caola, F |
| collection | OXFORD |
| description | We present a computation of the next-to-next-to-leading-order (NNLO) QCD corrections to the production of a Higgs boson in association with a W boson at the LHC and the subsequent decay of the Higgs boson into a bb¯ pair, treating the b quarks as massless. We consider various kinematic distributions and find significant corrections to observables that resolve the Higgs decay products. We also find that a cut on the transverse momentum of the W boson, important for experimental analyses, may have a significant impact on kinematic distributions and radiative corrections. We show that some of these effects can be adequately described by simulating QCD radiation in Higgs boson decays to b quarks using parton showers. We also describe contributions to Higgs decay to a bb¯ pair that first appear at NNLO and that were not considered in previous fully differential computations. The calculation of NNLO QCD corrections to production and decay sub-processes is carried out within the nested soft-collinear subtraction scheme presented by some of us earlier this year. We demonstrate that this subtraction scheme performs very well, allowing a computation of the coefficient of the second-order QCD corrections at the level of a few per mill. |
| first_indexed | 2024-03-06T18:43:29Z |
| format | Journal article |
| id | oxford-uuid:0db291a5-f8d3-459f-b521-b4c2971ee804 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:43:29Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:0db291a5-f8d3-459f-b521-b4c2971ee8042022-03-26T09:41:56ZNNLO QCD corrections to associated W H production and H → b ¯ b decayJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0db291a5-f8d3-459f-b521-b4c2971ee804EnglishSymplectic ElementsAmerican Physical Society2018Caola, FLuisoni, GMelnikov, KRoentsch, RWe present a computation of the next-to-next-to-leading-order (NNLO) QCD corrections to the production of a Higgs boson in association with a W boson at the LHC and the subsequent decay of the Higgs boson into a bb¯ pair, treating the b quarks as massless. We consider various kinematic distributions and find significant corrections to observables that resolve the Higgs decay products. We also find that a cut on the transverse momentum of the W boson, important for experimental analyses, may have a significant impact on kinematic distributions and radiative corrections. We show that some of these effects can be adequately described by simulating QCD radiation in Higgs boson decays to b quarks using parton showers. We also describe contributions to Higgs decay to a bb¯ pair that first appear at NNLO and that were not considered in previous fully differential computations. The calculation of NNLO QCD corrections to production and decay sub-processes is carried out within the nested soft-collinear subtraction scheme presented by some of us earlier this year. We demonstrate that this subtraction scheme performs very well, allowing a computation of the coefficient of the second-order QCD corrections at the level of a few per mill. |
| spellingShingle | Caola, F Luisoni, G Melnikov, K Roentsch, R NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title | NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title_full | NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title_fullStr | NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title_full_unstemmed | NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title_short | NNLO QCD corrections to associated W H production and H → b ¯ b decay |
| title_sort | nnlo qcd corrections to associated w h production and h b ¯ b decay |
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