• Open Access

Search for Z resonances decaying to tt¯ in dilepton+jets final states in pp collisions at s=7TeV

S. Chatrchyan et al. (CMS Collaboration)
Phys. Rev. D 87, 072002 – Published 3 April 2013

Abstract

A search for resonances decaying to top quark-antiquark pairs is performed using a dilepton+jets data sample recorded by the CMS experiment at the LHC in pp collisions at s=7TeV corresponding to an integrated luminosity of 5.0fb1. No significant deviations from the standard model background are observed. Upper limits are presented for the production cross section times branching fraction of top quark-antiquark resonances for masses from 750 to 3000 GeV. In particular, the existence of a leptophobic topcolor particle Z is excluded at the 95% confidence level for resonance masses MZ<1.3TeV for ΓZ=0.012MZ, and M<1.9TeV for ΓZ=0.10MZ.

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  • Received 14 November 2012

DOI:https://doi.org/10.1103/PhysRevD.87.072002

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2013 CERN, for the CMS Collaboration

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Vol. 87, Iss. 7 — 1 April 2013

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