Search for Diphoton Events with Large Missing Transverse Energy with 36 pb<sup>-1</sup> of 7 TeV Proton-Proton Collision Data with the ATLAS Detector
Making use of 36 pb<sup>-1</sup> of proton–proton collision data at s√=7 TeV, the ATLAS Collaboration has performed a search for diphoton events with large missing transverse energy. Observing no excess of events above the Standard Model prediction, a 95% Confidence Level (CL) upper limit is set on...
| Autores: | ; ; ; ; |
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| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2011 |
| País: | Argentina |
| Institución: | UNLP |
| Repositorio: | SEDICI (UNLP) |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/123718 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/123718 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Ciencias Exactas Física Diphoton events Proton–proton collision Supersymmetry |
| Sumario: | Making use of 36 pb<sup>-1</sup> of proton–proton collision data at s√=7 TeV, the ATLAS Collaboration has performed a search for diphoton events with large missing transverse energy. Observing no excess of events above the Standard Model prediction, a 95% Confidence Level (CL) upper limit is set on the cross section for new physics of σ<0.38−0.65 pb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, and of σ<0.18−0.23 pb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 560 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass, while a lower limit of 1/R>961 GeV is set on the UED compactification radius R. These limits provide the most stringent tests of these models to date. |
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