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
Abstract Measurements of the associated production of a W boson and a charm ( $${\text {c}}$$ c ) quark in proton–proton collisions at a centr...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2022
|
| Online Access: | https://hdl.handle.net/1721.1/146837 |
| Summary: | 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. |
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