Measurement of associated production of a W boson and a charm quark in proton-proton collisions at [radical]s=13TeV

• Main Author: Abercrombie (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor)
• Format: Article
• Language: English
• Published: Springer Science and Business Media LLC, 2020-03-12T20:21:44Z.
• Subjects: Article
• Online Access: Get fulltext

 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)±→D[superscript 0]+±→K∓+±+±. A cross section is measured in the fiducial region defined by the muon transverse momentum T>26GeV, muon pseudorapidity |[superscript ]|<2.4, and charm quark transverse momentum [superscript c][subscript T]>5GeV. The inclusive cross section for this kinematic range is (W+c)=1026±31(stat)[superscript +76][subscript −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.