Measurement of the Top-Quark Mass in the All-Hadronic Channel using the full CDF data set

Journal article

The top-quark mass M_top is measured using top quark-antiquark pairs produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV and decaying into a fully hadronic final state. The full data set collected with the CDFII 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 M_top with a simultaneous calibration of the jet-energy scale. A value of M_top = 175.07+- 1.19(stat)+1.55-1.58(syst) GeV/c^2 is obtained for the top-quark mass.

Authors: Collaboration, CDF; Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A

• Publication status: Published
• Publisher: American Physical Society
• Journal: Phys. Rev. D
• Volume: 90
• Issue: 9
• Pages: 091101
• Publication date: 2014-09-17
• DOI: 10.1103/PhysRevD.90.091101
• EISSN: 1550-2368
• ISSN: 1550-7998
• Language: English
• Keywords: hep-ex