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

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Ferrere, Didier / Gadomski, Szymon / Gaumer, Olivier / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Leger, Annie / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physical Review Letters. 2012, vol. 108, no. 21, p. 211802
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.
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ATLAS COLLABORATION. Search for Production of Resonant States in the Photon-Jet Mass Distribution Using pp Collisions at √s=7  TeV Collected by the ATLAS Detector. In: Physical Review Letters, 2012, vol. 108, n° 21, p. 211802. https://archive-ouverte.unige.ch/unige:40277

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Deposited on : 2014-09-18

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