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 6.3 fb(-1) of integrated luminosity from root 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.

T., A., S., A., D., A., A., A., A., A., J., A., et al. (2013). Signature-based search for delayed photons in exclusive photon plus missing transverse energy events from p pbar collisions with sqrt(s)=1.96  TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(3) [10.1103/PhysRevD.88.031103].

Signature-based search for delayed photons in exclusive photon plus missing transverse energy events from p pbar collisions with sqrt(s)=1.96  TeV

BARRIA, PATRIZIA;GAROSI, PAOLA;MAESTRO, PAOLO;RUFFINI, FABRIZIO;
2013-01-01

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 6.3 fb(-1) of integrated luminosity from root 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.
2013
T., A., S., A., D., A., A., A., A., A., J., A., et al. (2013). Signature-based search for delayed photons in exclusive photon plus missing transverse energy events from p pbar collisions with sqrt(s)=1.96  TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(3) [10.1103/PhysRevD.88.031103].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/45043
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