Measurement of the W±Z boson pair-production cross section in pp collisions at √s=13 TeV with the ATLAS detector
The production of W±Z events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC. The collected data correspond to an integrated luminosity of 3.2 fb−1. The W±Z candidates are reconstructed using leptonic decays of the gauge bosons into ele...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/678246 |
| Acceso en línea: | http://hdl.handle.net/10486/678246 https://dx.doi.org/10.1016/j.physletb.2016.08.052 |
| Access Level: | acceso abierto |
| Palabra clave: | Cross section ATLAS Collaboration Measurement Collisions Física |
| Sumario: | The production of W±Z events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC. The collected data correspond to an integrated luminosity of 3.2 fb−1. The W±Z candidates are reconstructed using leptonic decays of the gauge bosons into electrons or muons. The measured inclusive cross section in the detector fiducial region for leptonic decay modes is σfid. W±Z→ℓʹ νℓℓ=63.2 ±3.2 (stat.)±2.6 (sys.)±1.5 (lumi.)fb. In comparison, the next-to-leading-order Standard Model prediction is 53.4+3.6 −2.8fb. The extrapolation of the measurement from the fiducial to the total phase space yields σtot. W±Z=50.6 ±2.6 (stat.)±2.0 (sys.)±0.9 (th.)±1.2 (lumi.)pb, in agreement with a recent next-to-next-to-leading-order calculation of 48.2+1.1 −1.0pb. The cross section as a function of jet multiplicity is also measured, together with the charge-dependent W+Z and W−Z cross sections and their ratio |
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