4.8 Article

Predictions for Z-Boson Production in Association with a b-Jet at O(αs3)

期刊

PHYSICAL REVIEW LETTERS
卷 125, 期 22, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.222002

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资金

  1. Dutch Organisation for Scientific Research (NWO) through the VENI [680-47-461]
  2. Swiss National Science Foundation (SNF) [200021-172478]
  3. Swiss National Science Foundation (SNF) [200021_172478] Funding Source: Swiss National Science Foundation (SNF)

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Precise predictions are provided for the production of a Z boson and a b-jet in hadron-hadron collisions within the framework of perturbative QCD, at O(alpha(3)(s)). To obtain these predictions, we perform the first calculation of a hadronic scattering process involving the direct production of a flavored jet at next-to-next-to-leading-order accuracy in massless QCD and extend techniques to also account for the impact of finite heavy-quark mass effects. The predictions are compared to CMS data obtained in pp collisions at a center-of-mass energy of 8 TeV, which are the most precise data from run I of the LHC for this process, where a good description of the data is achieved. To allow this comparison, we have performed an unfolding of the data, which overcomes the long-standing issue that the experimental and theoretical definitions of jet flavor are incompatible.

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