2007/02/28 by A. Abulencia, A. Abulencia et al., J. Adelman +98 · 18 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Electron #Energy (signal processing) #Lepton #Nuclear physics #Order (exchange) #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum mechanics #hep-ex
paper · pdf · open access · doi:10.1103/physrevd.75.112001
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 75(11) (American Physical Society) · 15 pages, 13 figures
arxiv created 2007/04/13 · openalex publication_date 2007/06/28 · arxiv updated 2010/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We present results of a search at CDF in 929\ifmmode±\else\textpm\fi56 pb^\ensuremath-1 of pp collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton (\ensuremathℓ, either e or \ensuremathμ) and photon (\ensuremathγ), accompanied by missing transverse energy (\mathrmE\ensuremath\llap\not T), 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 \ensuremathℓ\ensuremathγ\mathrmE\ensuremath\llap\not T+X events, compared to an expectation of 150.6\ifmmode±\else\textpm\fi13.0 events. We observe 74 \ensuremathℓ\ensuremathℓ\ensuremathγ+X events, compared to an expectation of 65.1\ifmmode±\else\textpm\fi7.7 events. We find no events similar to the Run I ee\ensuremathγ\ensuremathγ\mathrmE\ensuremath\llap\not T event.