Search for production of resonant states in the photon-jet mass distribution using pp collisions at √s=7TeV collected by the ATLAS detector

This Letter describes a model-independent search for the production of new resonant states in photon+jet events in 2.11fb - 1 of proton-proton collisions at √s=7TeV. We compare the photon+jet mass distribution to a background model derived from data and find consistency with the background-only hypo...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Materias:
ATLAS detectors
Background model
Branching fractions
Cross section
Gaussians
Mass distribution
Proton proton collisions
Resonant state
Photons
Tellurium compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v108_n21_p_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:This Letter describes a model-independent search for the production of new resonant states in photon+jet events in 2.11fb - 1 of proton-proton collisions at √s=7TeV. We compare the photon+jet mass distribution to a background model derived from data and find consistency with the background-only hypothesis. Given the lack of evidence for a signal, we set 95% credibility level limits on generic Gaussian-shaped signals and on a benchmark excited-quark (q * ) model, excluding 2 TeV Gaussian resonances with cross section times branching fraction times acceptance times efficiency near 5 fb and excluding q * masses below 2.46 TeV, respectively. © 2012 CERN. Published by the American Physical Society.

Ejemplares similares