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Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 89: Top: top Masse

T 89.7: Talk

Thursday, March 12, 2015, 18:15–18:30, L.09.28 (HS 12)

Determination of the normalised invariant mass distribution of tt+jet and extraction of the top-quark mass — •Simon Spannagel and Carmen Diez Pardos — DESY, Hamburg, Germany

A measurement of the top-quark mass from tt events with additional jets is performed using √s=8 TeV pp collision data recorded at the CMS experiment in 2012, corresponding to an integrated luminosity of 19.7 fb−1. The measurements are performed in the dilepton decay channels (e+e+µ and e±µ) of the top-antitop quark pairs. The mass is extracted from both the distribution and the normalised differential top-antitop quark cross section as a function of the reconstructed invariant mass of the tt+jet system.

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