Measurement of the t ¯t Z and t ¯tW production cross sections in multilepton final states using 3.2 fb−1 of pp collisions at √ s = 13 TeV with the ATLAS detector

ATLAS Collaboration

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Measurement of the t ¯t Z and t ¯tW production cross sections in multilepton final states using 3.2 fb−1 of pp collisions at √ s = 13 TeV with the ATLAS detector

ATLAS Collaboration

Abstract

A measurement of the tt¯Z and tt¯W 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 σtt¯Z=0.9±0.3 pb and σtt¯W=1.5±0.8 pb, in agreement with the Standard Model predictions.

Date

2017-01-20

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SpringerOpen

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Physics & Astronomy Scholarly Works

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ATLASCollaboration_2017.pdf

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Aaboud, M., Aad, G., Abbott, B. et al. Eur. Phys. J. C (2017) 77: 40. https://doi.org/10.1140/epjc/s10052-016-4574-y

URI

https://hdl.handle.net/1808/27265

DOI

10.1140/epjc/s10052-016-4574-y

Measurement of the t ¯t Z and t ¯tW production cross sections in multilepton final states using 3.2 fb−1 of pp collisions at √ s = 13 TeV with the ATLAS detector

ATLAS Collaboration

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