• Open Access

Search for Production of Resonant States in the Photon-Jet Mass Distribution Using pp Collisions at s=7TeV Collected by the ATLAS Detector

G. Aad et al. (ATLAS Collaboration)
Phys. Rev. Lett. 108, 211802 – Published 22 May 2012

Abstract

This Letter describes a model-independent search for the production of new resonant states in photon+jet events in 2.11fb1 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.

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  • Received 15 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.211802

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2012 CERN, for the ATLAS Collaboration

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Vol. 108, Iss. 21 — 25 May 2012

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