A signature-based search for delayed photons in exclusive photon plus missing transverse energy events from pp¯ collisions with s√=1.96 TeV
(2013) Physical Review. D, Particles, Fields, Gravitation and Cosmology — Vol. 88, n° 3, p. 31103 (2013)
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- Abstract
- We present the first signature-based search for delayed photons using an exclusive photon plus missing transverse energy final state. Events are reconstructed in a data sample from the CDF II detector corresponding to 6.3fb−1 of integrated luminosity from s√=1.96 TeV proton-antiproton collisions. Candidate events are selected if they contain a photon with an arrival time in the detector larger than expected from a promptly-produced photon. The mean number of events from standard model sources predicted by the data-driven background model based on the photon timing distribution is 286±24. A total of 322 events are observed. A p-value of 12% is obtained, showing consistency of the data with standard model predictions.
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Citations
Aaltonen, T., Vizan Garcia, J. M., The CDF Collaboration, & et al. (2013). A signature-based search for delayed photons in exclusive photon plus missing transverse energy events from pp¯ collisions with s√=1.96 TeV. Physical Review. D, Particles, Fields, Gravitation and Cosmology, 88(3), 31103. https://doi.org/10.1103/PhysRevD.88.031103 (Original work published 2013)