10-1016-j-physletb-2016-08-042.pdf (1.98 MB)
Measurement of the top quark mass in the tt? dilepton channel from vs = 8 TeV ATLAS data
journal contribution
posted on 2023-06-09, 03:45 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, C T Potter, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, et al The Atlas CollaborationThe 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 vs = 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 vs = 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.
History
Publication status
- Published
File Version
- Published version
Journal
Physics Letters BISSN
0370-2693Publisher
ElsevierExternal DOI
Volume
761Page range
350-371Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Experimental Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
