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Título

Signature-based search for delayed photons in exclusive photon plus missing transverse energy events from pp̄ collisions with √s=1.96 TeV

Autor Aaltonen, T.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Palencia, Enrique ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vilar, Rocío ; Vizán, J. ; CDF Collaboration
Fecha de publicación 2013
EditorAmerican Physical Society
Citación Physical Review D 88: 031103(R) (2013)
ResumenWe 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 √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 American Physical Society.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.88.031103
URI http://hdl.handle.net/10261/109988
DOI10.1103/PhysRevD.88.031103
Identificadoresdoi: 10.1103/PhysRevD.88.031103
issn: 1550-7998
e-issn: 1550-2368
Aparece en las colecciones: (IFCA) Artículos
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