Measurement of the top-quark mass in the all-hadronic channel using the full CDF data set
Abstract
The top-quark mass Mtop is measured using top quark-antiquark pairs produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV and that decay into a fully hadronic final state. The full data set collected with the CDF II detector at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 9.3 fb-1 , is used. Events are selected that have six to eight jets, at least one of which is identified as having originated from a b quark. In addition, a multivariate algorithm, containing multiple kinematic variables as inputs, is used to discriminate signal events from background events due to QCD multijet production. Templates for the reconstructed top-quark mass are combined in a likelihood fit to measure Mtop with a simultaneous calibration of the jet energy scale. A value of Mtop=175.07 ±1.19 (stat )-1.58+1.55(syst ) GeV /c2 is obtained for the top-quark mass.
- Publication:
-
Physical Review D
- Pub Date:
- November 2014
- DOI:
- 10.1103/PhysRevD.90.091101
- Bibcode:
- 2014PhRvD..90i1101A
- Keywords:
-
- 14.65.Ha;
- 13.85.Ni;
- 13.85.Qk;
- Top quarks;
- Inclusive production with identified hadrons;
- Inclusive production with identified leptons photons or other nonhadronic particles