Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and The ATLAS Collaboration, (2018) Combination of inclusive and differential tt¯ charge asymmetry measurements using ATLAS and CMS data at √s=7 and 8 TeV. Journal of High Energy Physics, 2018 (33). ISSN 1126-6708

PDF - Published Version Available under License Creative Commons Attribution. Download (1MB)

Abstract

This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt¯) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb−1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7  = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8  = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the tt¯ system at 8 TeV, are consistent with the respective standard model predictions.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects:	Q Science > QC Physics
Related URLs:	https://link.springer.com/article/10.100...
Depositing User:	Billy Wichaidit
Date Deposited:	29 May 2018 12:29
Last Modified:	06 Jun 2018 13:38
URI:	http://srodev.sussex.ac.uk/id/eprint/76202

View download statistics for this item

📧 Request an update