Logo image
Measurement of the top quark mass in the tt̄ → Dilepton channel from √s=8 TeV ATLAS data
Journal article   Open access   Peer reviewed

Measurement of the top quark mass in the tt̄ → Dilepton channel from √s=8 TeV ATLAS data

M Aaboud, G Aad, B Abbott, J Abdallah, O Abdinov, B Abeloos, Torsten Åkesson, Simona Bocchetta, LENE Bryngemark, Caterina Doglioni, …
Physics letters. B, Vol.761, pp.350-371
2016
DOI: 10.1016/j.physletb.2016.08.042
url
https://doi.org/10.1016/j.physletb.2016.08.042View
Published (Version of record) Open Access

Abstract

The top quark mass is measured in the tt̄ → dileptonchannel (lepton=e, µ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of √s=8 TeV and correspond to an integrated luminosity of about 20.2fb-1. Exploiting the template method, and using the distribution of invariant masses of lepton-b-jetpairs, the top quark mass is measured to be mtop=172.99 ±0.41 (stat) ±0.74 (syst) GeV, with a total uncertainty of 0.84 GeV. Finally, acombination with previous ATLAS mtop measurements from √s=7TeVdata in the tt̄ → dilepton and tt̄→lepton+jetschannels results in mtop=172.84 ±0.34 (stat) ±0.61 (syst) GeV, with a total uncertainty of 0.70 GeV. © 2016 The Author.
Natural Sciences Physical Sciences Fysik Naturvetenskap Subatomic Physics Subatomär fysik

Details

Logo image