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Measurement of associated production of a W boson and a charm quark in proton–proton collisions at s√=13TeV
- Source :
- European Physical Journal C: Particles and Fields
- Publication Year :
- 2019
-
Abstract
- Measurements are presented of associated production of a W boson and a charm quark (W+c) in proton–proton collisions at a center-of-mass energy of 13TeV. The data correspond to an integrated luminosity of 35.7fb−1 collected by the CMS experiment at the CERN LHC. The W bosons are identified by their decay into a muon and a neutrino. The charm quarks are tagged via the full reconstruction of D∗(2010)± mesons that decay via D∗(2010)±→D0+π±→K∓+π±+π±. A cross section is measured in the fiducial region defined by the muon transverse momentum pμT>26GeV, muon pseudorapidity |ημ|5GeV. The inclusive cross section for this kinematic range is σ(W+c)=1026±31(stat)+76−72(syst) pb. The cross section is also measured differentially as a function of the pseudorapidity of the muon from the W boson decay. These measurements are compared with theoretical predictions and are used to probe the strange quark content of the proton.
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- European Physical Journal C: Particles and Fields
- Accession number :
- edsair.dedup.wf.001..3f8e717741e8dbde10fd3d066542f148