Higgs boson production in association with massive bottom quarks at NNLO+PS
Abstract We study the production of a Higgs boson in association with a bottom-quark pair b b ¯ H $$ \left(b\overline{b}H\right) $$ at hadron colliders. Our calculation is performed in the four-flavour scheme with massive bottom quarks. This work presents the first computation of next-to-next-to-lea...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-04-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP04(2025)088 |
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| Summary: | Abstract We study the production of a Higgs boson in association with a bottom-quark pair b b ¯ H $$ \left(b\overline{b}H\right) $$ at hadron colliders. Our calculation is performed in the four-flavour scheme with massive bottom quarks. This work presents the first computation of next-to-next-to-leading-order (NNLO) QCD corrections to this process, and we combine them with all-order radiative corrections from a parton shower simulation (NNLO+PS). The calculation is exact, except for the two-loop amplitude, which is evaluated in the small quark mass expansion, which is an excellent approximation for bottom quarks at LHC energies. For the NNLO+PS matching, we employ the MiNNLOPS method for heavy-quark plus colour-singlet production within the Powheg framework. We present an extensive phenomenological analysis both at the inclusive level and considering bottom jets using flavour-tagging algorithms. By comparing four-flavour and five-flavour scheme predictions at NNLO+PS, we find that the NNLO corrections in the four-flavour scheme resolve the long-standing tension between the two schemes. Finally, we show that our NNLO+PS predictions also have important implications on modelling the b b ¯ H $$ b\overline{b}H $$ background in Higgs-pair measurements. |
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| ISSN: | 1029-8479 |