Abstract
We study the production of a W boson in association with a c-jet at the LHC. We calculate, for the first time, the complete set of NNLO QCD corrections to the dominant CKM-diagonal contribution to this process. Both signatures, pp → μ+νμjc and pp → {mu}^{-}{overline{nu}}_{mu }{mathrm{j}}_c are considered. We present predictions for fiducial cross sections and differential distributions for each one of the two signatures as well as for their ratio. The theoretical predictions are compared with ATLAS measurements at 7 TeV. The results of this work are essential for the precision description of associated heavy flavor production at hadron colliders and for the determination of the strange-quark content of the proton from LHC data in NNLO QCD.
Highlights
JHEP06(2021)100 the art predictions have been combined in ref. [39] with the known NNLO QCD corrections for the purpose of a study on SM-backgrounds to Dark-Matter searches
We study the production of a W boson in association with a c-jet at the LHC
The production of a W boson in association with a charm jet at the LHC represents a very sensitive probe of the proton’s strange quark content. To enable this parton distribution function (PDF)’s precision extraction, in this article we calculate for the first time the NNLO QCD corrections to this process
Summary
The process under current investigation is the off-shell production of a W boson in association with a c-jet at the LHC in its proton-proton collision mode. The real corrections consist of all partonic processes that have in the final state a (decaying) W boson in association with two partons, at least one of which is a charm quark or anti-quark. These partonic reactions are made of either four external quarks or two quarks and two gluons. It is worth noticing that already at NLO almost all partonic reactions contribute, apart from the gq channel (q stands for any quark or anti-quark which is not s or s) and sg ( ̄sg) for pp → W+jc (pp → W−jc) These partonic channels only contribute at NNLO in the CKM-diagonal case
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