Münster 2017 – scientific programme
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T: Fachverband Teilchenphysik
T 101: Top Quark 5 (Eigenschaften)
T 101.4: Talk
Thursday, March 30, 2017, 17:30–17:45, JUR 4
Measurement of the top-quark MS and pole masses with 2.2 fb−1 at √s=13 TeV — •Matteo Defranchis1, Katerina Lipka1, Jan Kieseler2, and Sven-Olaf Moch3 — 1DESY, Hamburg, Germany — 2CERN, Geneva, Switzerland — 3Universität Hamburg, Hamburg, Germany
A measurement of the top-quark MS and pole masses is performed using proton-proton collisions data recorded by the CMS detector during 2015 data taking at the centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 2.2 fb−1. A binned-likelihood fit to multi-differential distributions of final state observables is performed to constrain systematic uncertainties in situ and to extract the visible tt production cross section. The top-quark Monte Carlo mass is treated as a nuisance parameter in the fit, and the observed tt cross section is compared to theory predictions at next-to-next-to-leading order in order to extract the top-quark mass in a well-defined renormalization scheme.