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Search for Production of Resonant States in the Photon-Jet Mass Distribution Using pp Collisions at root s=7 TeV Collected by the ATLAS Detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3016
2012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 108, no 21, 211802- p.Article in journal (Refereed) Published
Abstract [en]

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 root 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.

Place, publisher, year, edition, pages
2012. Vol. 108, no 21, 211802- p.
Keyword [en]
Excited Fermions, Physics, Hera
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-98086DOI: 10.1103/PhysRevLett.108.211802ISI: 000304404200006Scopus ID: 2-s2.0-84861638934OAI: oai:DiVA.org:kth-98086DiVA: diva2:535301
Note
QC 20120619. Author count: 3016Available from: 2012-06-19 Created: 2012-06-19 Last updated: 2017-12-07Bibliographically approved

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Strandberg, Jonas

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