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• W4311036389 abstract "Abstract Measurements of the associated production of a W boson and a charm ( $${text {c}}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mtext>c</mml:mtext> </mml:math> ) quark in proton–proton collisions at a centre-of-mass energy of 8 $$,text {TeV}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mspace /> <mml:mtext>TeV</mml:mtext> </mml:mrow> </mml:math> are reported. The analysis uses a data sample corresponding to a total integrated luminosity of 19.7 $$,text {fb}^{-1}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mspace /> <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> 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 $$sigma (text {p}text {p}rightarrow text {W}+ {text {c}}+ text {X}) {mathcal {B}}(text {W}rightarrow ell upnu )$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>σ</mml:mi> <mml:mo>(</mml:mo> <mml:mtext>pp</mml:mtext> <mml:mo>→</mml:mo> <mml:mtext>W</mml:mtext> <mml:mo>+</mml:mo> <mml:mtext>c</mml:mtext> <mml:mo>+</mml:mo> <mml:mtext>X</mml:mtext> <mml:mo>)</mml:mo> <mml:mi>B</mml:mi> <mml:mo>(</mml:mo> <mml:mtext>W</mml:mtext> <mml:mo>→</mml:mo> <mml:mi>ℓ</mml:mi> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> , where $$ell = text {e}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>ℓ</mml:mi> <mml:mo>=</mml:mo> <mml:mtext>e</mml:mtext> </mml:mrow> </mml:math> or $$upmu $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>μ</mml:mi> </mml:math> , and the cross section ratio $$sigma (text {p}text {p}rightarrow {{text {W}}^{+} + bar{{text {c}}} + text {X}}) / sigma (text {p}text {p}rightarrow {{text {W}}^{-} + {text {c}}+ text {X}})$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>σ</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mtext>pp</mml:mtext> <mml:mo>→</mml:mo> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>W</mml:mtext> </mml:mrow> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>+</mml:mo> <mml:mover> <mml:mrow> <mml:mtext>c</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>+</mml:mo> <mml:mtext>X</mml:mtext> </mml:mrow> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>/</mml:mo> <mml:mi>σ</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mtext>pp</mml:mtext> <mml:mo>→</mml:mo> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>W</mml:mtext> </mml:mrow> <mml:mo>-</mml:mo> </mml:msup> <mml:mo>+</mml:mo> <mml:mtext>c</mml:mtext> <mml:mo>+</mml:mo> <mml:mtext>X</mml:mtext> </mml:mrow> <mml:mo>)</mml:mo> </mml:mrow> </mml:mrow> </mml:math> 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." @default.
• W4311036389 created "2022-12-22" @default.
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