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Journal articles
Search for Z' resonances decaying to ttbar in dilepton+jets final states in pp collisions at sqrt(s) = 7 TeV
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 sqrt(s) = 7 TeV corresponding to an integrated luminosity of 5.0 inverse femtobarns. 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 M[Z'] < 1.3 TeV for Gamma[Z'] = 0.012 M[Z'], and M[Z'] < 1.9 TeV for Gamma[Z'] = 0.10 M[Z'].
http://hal.in2p3.fr/in2p3-00752167
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Thursday, November 15, 2012 - 7:44:21 AM
Last modification on : Monday, March 28, 2022 - 9:39:18 AM
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Thursday, November 15, 2012 - 7:44:21 AM
Last modification on : Monday, March 28, 2022 - 9:39:18 AM
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