Measurements of W+W−+ ≥ 1 jet production cross-sections in pp collisions at s√ = 13 TeV with the ATLAS detector

Abraham, N L, Allbrooke, B M M, Aparo, M A, Asquith, L, Cerri, A, De Santo, A, Evans, M O, Grandi, M, Jones, S D, Kelsey, D, Koeck, D M, Mcfayden, J A, Safarzadeh Samani, B, Salvatore, F, Shaw, K, Spina, M, Stevenson, T J, Sutton, M R, Tresoldi, F, Trovato, F, Vivarelli, I, Winkels, E, Xiotidis, I, ATLAS Collaboration, and Others, (2021) Measurements of W+W−+ ≥ 1 jet production cross-sections in pp collisions at s√ = 13 TeV with the ATLAS detector. Journal of High Energy Physics, 2021 (6). pp. 1-58. ISSN 1126-6708

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Fiducial and differential cross-section measurements of W+W− production in association with at least one hadronic jet are presented. These measurements are sensitive to the properties of electroweak-boson self-interactions and provide a test of perturbative quantum chromodynamics and the electroweak theory. The analysis is performed using proton-proton collision data collected at s√ = 13 TeV with the ATLAS experiment, corresponding to an integrated luminosity of 139 fb−1. Events are selected with exactly one oppositely charged electron-muon pair and at least one hadronic jet with a transverse momentum of pT > 30 GeV and a pseudorapidity of |η| < 4.5. After subtracting the background contributions and correcting for detector effects, the jet-inclusive W+W−+ ≥ 1 jet fiducial cross-section and W+W−+ jets differential cross-sections with respect to several kinematic variables are measured. These measurements include leptonic quantities, such as the lepton transverse momenta and the transverse mass of the W+W− system, as well as jet-related observables such as the leading jet transverse momentum and the jet multiplicity. Limits on anomalous triple-gauge-boson couplings are obtained in a phase space where interference between the Standard Model amplitude and the anomalous amplitude is enhanced.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Tyrone Knight
Date Deposited: 03 Nov 2021 12:48
Last Modified: 03 Nov 2021 13:00

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