We describe a search for anomalous production of events with two leptons (e or mu) of the same electric charge in p(p) over bar collisions at a center-of-mass energy of 1.96 TeV. Many extensions to the standard model predict the production of two leptons of the same electric charge. This search has a significant increase in sensitivity compared to earlier searches. Using a data sample corresponding to 1 fb(-1) of integrated luminosity recorded by the CDF II detector, we observe no significant excess in an inclusive selection (expect 33.2 +/- 4.7 events, observe 44) or in a supersymmetry-optimized selection (expect 7.8 +/- 1.1 events, observe 13.). RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012

Inclusive search for new physics with like-sign dilepton events in p(p)over-bar collisions at root s=1.96 TeV

PIACENTINO, Giovanni Maria;
2007

Abstract

We describe a search for anomalous production of events with two leptons (e or mu) of the same electric charge in p(p) over bar collisions at a center-of-mass energy of 1.96 TeV. Many extensions to the standard model predict the production of two leptons of the same electric charge. This search has a significant increase in sensitivity compared to earlier searches. Using a data sample corresponding to 1 fb(-1) of integrated luminosity recorded by the CDF II detector, we observe no significant excess in an inclusive selection (expect 33.2 +/- 4.7 events, observe 44) or in a supersymmetry-optimized selection (expect 7.8 +/- 1.1 events, observe 13.). RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11695/74
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