Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum
Abstract
We study how the significance of top quark induced charge asymmetries at the LHC may be enhanced exploiting the total transverse momentum to enrich the fraction of quark fusion events in the sample. We combine this variable with previous variables related to the boost and the invariant mass of the pair to find an optimum cut which maximizes the significance of the asymmetry when systematic and statistic errors are taken into account. We find that including the transverse momentum in the analysis of the expected 2012 LHC data provides a considerable enhancement in the significance of the asymmetry.
Cite
@article{arxiv.1202.6622,
title = {Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum},
author = {Ezequiel Alvarez},
journal= {arXiv preprint arXiv:1202.6622},
year = {2013}
}
Comments
Matches the Physical Review D accepted version. Includes the recent CMS results on the LHC ttbar induced asymmetry in which they use the ttbar transverse momentum for the first time. The results are adapted to their selection efficiency and resolution in ttbar transverse momentum of 20 GeV, which increases still more the enhancement in the significance. 18 pages, 11 figures