Determination of the top quark mass from leptonic observables

Jul 10, 2014
29 pages
Published in:
  • JHEP 09 (2014) 012
  • Published: 2014
e-Print:
Report number:
  • CERN-PH-TH-2014-117,
  • CAVENDISH-HEP-14-05

Citations per year

2013201620192022202502468101214
Abstract: (arXiv)
We present a procedure for the determination of the mass of the top quark at the LHC based on leptonic observables in dilepton ttˉt\bar{t} events. Our approach utilises the shapes of kinematic distributions through their few lowest Mellin moments; it is notable for its minimal sensitivity to the modelling of long-distance effects, for not requiring the reconstruction of top quarks, and for having a competitive precision, with theory errors on the extracted top mass of the order of 0.8 GeV. A novel aspect of our work is the study of theoretical biases that might influence in a dramatic way the determination of the top mass, and which are potentially relevant to all template-based methods. We propose a comprehensive strategy that helps minimise the impact of such biases, and leads to a reliable top mass extraction at hadron colliders.
Note:
  • 29 pages, 3 figures
  • QCD Phenomenology
  • Hadronic Colliders
  • CERN LHC Coll
  • p p: scattering
  • top: pair production
  • top: mass
  • top: decay
  • dilepton: production
  • quantum chromodynamics: correction
  • correction: higher-order