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

G. Aad, B. Abbott, D.C. Abbott, A. Abed Abud, K. Abeling, D.K. Abhayasinghe, S.H. Abidi, O.S. AbouZeid, N.L. Abraham, H. Abramowicz, …
Journal of High Energy Physics, 卷.2021(6), 3
06/2021

摘要

Hadron-Hadron scattering (experiments) Nuclear and High Energy Physics
Fiducial and differential cross-section measurements of W <sup>+</sup> W <sup>−</sup> 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 <sup>−1</sup> . Events are selected with exactly one oppositely charged electron-muon pair and at least one hadronic jet with a transverse momentum of p <sub>T</sub> > 30 GeV and a pseudorapidity of |η| < 4.5. After subtracting the background contributions and correcting for detector effects, the jet-inclusive W <sup>+</sup> W <sup>−</sup> + ≥ 1 jet fiducial cross-section and W <sup>+</sup> W <sup>−</sup> + 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 <sup>+</sup> W <sup>−</sup> 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. [Figure not available: see fulltext.]

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https://doi.org/10.1007/JHEP06(2021)003檢視
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