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https://hdl.handle.net/10316/108167
Title: | Measurement of the tt¯Z and tt¯W production cross sections in multilepton final states using 3.2 fb -1 of pp collisions at √s = 13 TeV with the ATLAS detector | Authors: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | 2017 | Publisher: | Springer Nature | Serial title, monograph or event: | European Physical Journal C | Volume: | 77 | Issue: | 1 | Abstract: | A measurement of the t ¯t Z and t ¯tW production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton–proton collisions at √ s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb−1. The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σt ¯t Z = 0.9 ± 0.3 pb and σt ¯tW = 1.5 ± 0.8 pb, in agreement with the Standard Model predictions. | URI: | https://hdl.handle.net/10316/108167 | DOI: | 10.1140/epjc/s10052-016-4574-y | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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