Measurements of the associated production of a W boson and a charm quark in proton–proton collisions at $$\sqrt{s}=8\,\text {TeV} $$ s = 8 TeV
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10052_2022_Article_10897.pdf
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Author(s)
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Erö, J.
Valle, A. E. D.
Frühwirth, R.
Jeitler, M.
Krammer, N.
Lechner, L.
Date Issued
December 5, 2022
Publisher
Springer Berlin Heidelberg
Citation
The European Physical Journal C. 2022 Dec 05;82(12):1094
Version
Final published version
Abstract
Abstract
Measurements of the associated production of a W boson and a charm (
$${\text {c}}$$
c
) quark in proton–proton collisions at a centre-of-mass energy of 8
$$\,\text {TeV}$$
TeV
are reported. The analysis uses a data sample corresponding to a total integrated luminosity of 19.7
$$\,\text {fb}^{-1}$$
fb
-
1
collected by 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 quark jets are selected using distinctive signatures of charm hadron decays. The product of the cross section and branching fraction
$$\sigma (\text {p}\text {p}\rightarrow \text {W}+ {\text {c}}+ \text {X}) {\mathcal {B}}(\text {W}\rightarrow \ell \upnu )$$
σ
(
pp
→
W
+
c
+
X
)
B
(
W
→
ℓ
ν
)
, where
$$\ell = \text {e}$$
ℓ
=
e
or
$$\upmu $$
μ
, and the cross section ratio
$$\sigma (\text {p}\text {p}\rightarrow {{\text {W}}^{+} + \bar{{\text {c}}} + \text {X}}) / \sigma (\text {p}\text {p}\rightarrow {{\text {W}}^{-} + {\text {c}}+ \text {X}})$$
σ
(
pp
→
W
+
+
c
¯
+
X
)
/
σ
(
pp
→
W
-
+
c
+
X
)
are measured in a fiducial volume and differentially as functions of the pseudorapidity and of the transverse momentum of the lepton from the W boson decay. The results are compared with theoretical predictions. The impact of these measurements on the determination of the strange quark distribution is assessed.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-022-10897-7
