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Search for new phenomena in photon plus jet events collected in proton-proton collisions at root s=8 TeV with 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.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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2014 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 728, 562-578 p.Article in journal (Refereed) Published
Abstract [en]

This Letter describes a model-independent search for the production of new resonances in photon + jet (gamma + jet) events using 20 fb(-1) of proton-proton LHC data recorded with the ATLAS detector at a centre-of-mass energy of root s = 8 TeV. The gamma + jet mass distribution is compared to a background model fit from data; no significant deviation from the background-only hypothesis is found. Limits are set at 95% credibility level on generic Gaussian-shaped signals and two benchmark phenomena beyond the Standard Model: non-thermal quantum black holes and excited quarks. Non-thermal quantum black holes are excluded below masses of 4.6 TeV and excited quarks are excluded below masses of 3.5 TeV.

Place, publisher, year, edition, pages
2014. Vol. 728, 562-578 p.
Keyword [en]
Excited Fermions, Hadron Colliders, Millimeter, Dimensions, Hera
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-143560DOI: 10.1016/j.physletb.2013.12.029ISI: 000330556000086Scopus ID: 2-s2.0-84896944218OAI: oai:DiVA.org:kth-143560DiVA: diva2:707669
Note

QC 20140325

Available from: 2014-03-25 Created: 2014-03-25 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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