Measurement of the production cross section for a W boson in association with a charm quark in proton–proton collisions at ?s=13TeV

Küçük Resim Yok

Tarih

2024

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer Nature

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

The strange quark content of the proton is probed through the measurement of the production cross section for a W boson and a charm (c) quark in proton–proton collisions at a center-of-mass energy of 13 TeV . The analysis uses a data sample corresponding to a total integrated luminosity of 138 fb-1 collected with the CMS detector at the LHC. The W bosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm jets are tagged using the presence of a muon or a secondary vertex inside the jet. The W + c production cross section and the cross section ratio Rc±=?(W++c¯)/?(W-+c) are measured inclusively and differentially as functions of the transverse momentum and the pseudorapidity of the lepton originating from the W boson decay. The precision of the measurements is improved with respect to previous studies, reaching 1% in Rc±=0.950±0.005(stat)±0.010(syst) . The measurements are compared with theoretical predictions up to next-to-next-to-leading order in perturbative quantum chromodynamics. © 2024, The Author(s).

Açıklama

Anahtar Kelimeler

Charged particles, Quantum theory, A-center, Center-of-mass energies, Centre-of-mass energies, Charm quarks, Charm+, Measurements of, Production cross section, Proton proton collisions, Quark contents, W bosons, Bosons

Kaynak

European Physical Journal C

WoS Q Değeri

Scopus Q Değeri

Q1

Cilt

84

Sayı

1

Künye