This Letter describes a model-independent search for the production of new resonant states in photon+jet events in 2.11  fb-1 of proton-proton collisions at √s=7  TeV. 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.

G. AAD, E. ABAT, B. ABBOTT, J. ABDALLAH, A.A. ABDELALIM, A. ABDESSELAM, et al. (2012). Search for Production of Resonant States in the Photon-Jet Mass Distribution using pp Collisions at √s = 7 TeV collected by the ATLAS Detector. PHYSICAL REVIEW LETTERS, 108, 211802-1-211802-18 [10.1103/PhysRevLett.108.211802].

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

BERTIN, ANTONIO;BINDI, MARCELLO;CAFORIO, DAVIDE;DE CASTRO, STEFANO;DI SIPIO, RICCARDO;FABBRI, LAURA;FRANCHINI, MATTEO;MASSA, IGNAZIO GIACOMO;MENGARELLI, ALBERTO;MONZANI, SIMONE;PICCININI, MAURIZIO;RINALDI, LORENZO;SBARRA, CARLA;SBRIZZI, ANTONIO;SEMPRINI CESARI, NICOLA;VALENTINETTI, SARA;VILLA, MAURO;I. VIVARELLI;ZOCCOLI, ANTONIO;
2012

Abstract

This Letter describes a model-independent search for the production of new resonant states in photon+jet events in 2.11  fb-1 of proton-proton collisions at √s=7  TeV. 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
G. AAD, E. ABAT, B. ABBOTT, J. ABDALLAH, A.A. ABDELALIM, A. ABDESSELAM, et al. (2012). Search for Production of Resonant States in the Photon-Jet Mass Distribution using pp Collisions at √s = 7 TeV collected by the ATLAS Detector. PHYSICAL REVIEW LETTERS, 108, 211802-1-211802-18 [10.1103/PhysRevLett.108.211802].
G. AAD; E. ABAT; B. ABBOTT; J. ABDALLAH; A.A. ABDELALIM; A. ABDESSELAM; O. ABDINOV; B. ABI; M. ABOLINS; H. ABRAMOWICZ; H. ABREU; E. ACERBI; B.S. ACHAR...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/116852
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