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Measurement of double-diferential charged-current Drell-Yan cross-sections at high transverse masses in pp collisions at √s = 13 TeV with the ATLAS detector

Springer Berlin Heidelberg

This paper presents a frst measurement of the cross-section for the chargedcurrent Drell-Yan process pp → W± → ℓ ±ν above the resonance region, where ℓ is an electron or muon. The measurement is performed for transverse masses, mW T , between 200 GeV and 5000 GeV, using a sample of 140 fb−1 of pp collision data at a centre-of-mass energy of √ s = 13 TeV collected by the ATLAS detector at the LHC during 2015–2018. The data are presented single diferentially in transverse mass and double diferentially in transverse mass and absolute lepton pseudorapidity. A test of lepton favour universality shows no signifcant deviations from the Standard Model. The electron and muon channel measurements are combined to achieve a total experimental precision of 3% at low mW T . The single- and double diferential W-boson charge asymmetries are evaluated from the measurements. A comparison to next-to-next-to-leading-order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading-order electroweak efects indicates the potential of the data to constrain parton distribution functions. The data are also used to constrain four fermion operators in the Standard Model Efective Field Theory formalism, in particular the lepton-quark operator Wilson coefcient c(3)ℓq .

Article

eng

Vancouver : University of British Columbia Library

10.14288/1.0449413

Science, Faculty of; TRIUMF; Non UBC; Physics and Astronomy, Department of

10.1007/JHEP07(2025)026

Faculty; Researcher

http://creativecommons.org/licenses/by/4.0/