期刊
PHYSICAL REVIEW D
卷 106, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.074016
关键词
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资金
- European Union [772099, ST/T000694/1]
- STFC consolidated HEP [PPSP226]
- STFC consolidated HEP theory Grant [PPSP226]
- Cambridge Trust
- Trinity College Cambridge
- Leverhulme Trust
- Isaac Newton Trust
- DiRAC Cumulus HPC facility [ST/P002307/1]
- BEIS capital funding via STFC capital Grants [ST/R002452/1, ST/R00689X/1]
- STFC operations Grant
- [683211]
- European Research Council (ERC) [772099] Funding Source: European Research Council (ERC)
We compute the theoretical predictions for the production of a W boson in association with a bottom-quark pair at hadron colliders at NNLO in QCD. We derive an analytic expression for the required two-loop five-particle amplitudes in the leading color approximation employing finite-field methods. Numerical results show an improvement in the perturbative convergence upon inclusion of NNLO QCD corrections.
We compute theoretical predictions for the production of a W boson in association with a bottom-quark pair at hadron colliders at next-to-next-to-leading order (NNLO) in QCD, including the leptonic decay of the W boson, while treating the bottom quark as massless. This calculation constitutes the very first 2 -> 3 process with a massive external particle to be studied at such a perturbative order. We derive an analytic expression for the required two-loop five-particle amplitudes in the leading color approximation employing finite-field methods. Numerical results for the cross section and differential distributions are presented for ffiffithe Large Hadron Collider at p s = 8 TeV. We observe an improvement of the perturbative convergence for the inclusive case and for the prediction with a jet veto upon the inclusion of the NNLO QCD corrections.
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