Search for new physics inlepton+photon+Xevents with929  pb−1ofpp¯collisions ats=1.96  TeV

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doi:10.1103/physrevd.75.112001

Abstract

We present results of a search at CDF in 929±56 pb−1 of pp¯ collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton (ℓ, either e or μ) and photon (γ), accompanied by missing transverse energy (E̸T), and/or additional leptons and photons, and jets (X). We use the same selection criteria as in a previous CDF Run I search, but with an order-magnitude larger data set, a higher pp¯ collision energy, and the CDF II detector. We find 163 ℓγE̸T+X events, compared to an expectation of 150.6±13.0 events. We observe 74 ℓℓγ+X events, compared to an expectation of 65.1±7.7 events. We find no events similar to the Run I eeγγE̸T event.6 MoreReceived 21 February 2007DOI:https://doi.org/10.1103/PhysRevD.75.112001©2007 American Physical Society

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