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# Measurement of the top quark mass in the $t\bart\to$ dilepton channel from $\sqrts=8$ TeV ATLAS data

Submit Time: 2016-08-29
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Institute: 1.ATLAS Collaboration;

## Abstracts

 The top quark mass is measured in the?tt?→?dilepton channel (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 20.2 fb?1. Exploiting the template method, and using the distribution of invariant masses of lepton--b-jet pairs, 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, a combination with previous ATLAS?mtop?measurements from?s√=7 TeV data in the?tt?→?dilepton and?tt?→?lepton+jets channels results in?mtop=?172.84?±?0.34 (stat)?±?0.61 (syst) GeV, with a total uncertainty of 0.70 GeV.
Keywords: top quark ; ATLAS data;
Recommended references： Aaboud, Morad and others.(2016).Measurement of the top quark mass in the $t\bart\to$ dilepton channel from $\sqrts=8$ TeV ATLAS data.[ChinaXiv:201608.00170] (Click&Copy)
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