Search for New Physics inLepton+Photon+XEvents with305 pb−1ofpp¯Collisions ats=1.96 TeV

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doi:10.1103/physrevlett.97.031801

Abstract

We present results of a search for anomalous production of events containing a charged lepton (ℓ, either e or μ) and a photon (γ), both with high transverse momentum, accompanied by additional signatures X, including missing transverse energy (E̸T) and additional leptons and photons. We use the same selection criteria as in a previous CDF search but with a substantially larger data set, 305 pb−1, a pp¯ collision energy of 1.96 TeV, and the CDF II detector. We find 42 ℓγE̸T events versus an expectation of 37.3±5.4 events. We observe 31 ℓℓγ+X events versus an expectation of 23.0±2.7 events. We find no events similar to the run I eeγγE̸T event.Received 22 May 2006DOI:https://doi.org/10.1103/PhysRevLett.97.031801©2006 American Physical Society

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