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Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at root s=13 TeV with the ATLAS detector
Université Mohamed Premier, Faculté des Sciences, Oujda; LPTPM, Oujda.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.ORCID iD: 0000-0002-1253-8583
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. Georg-August-Universität, II Physikalisches Institut, Göttingen.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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Number of Authors: 28912018 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 78, article id 102Article in journal (Refereed) Published
Abstract [en]

A search is performed for new phenomena in events having a photon with high transverse momentum and a jet collected in 36.7 fb(-1) of proton-proton collisions at a centre-of-mass energy of root s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The invariant mass distribution of the leading photon and jet is examined to look for the resonant production of new particles or the presence of new high-mass states beyond the Standard Model. No significant deviation from the background-only hypothesis is observed and cross-section limits for generic Gaussian-shaped resonances are extracted. Excited quarks hypothesized in quark compositeness models and high-mass states predicted in quantum black hole models with extra dimensions are also examined in the analysis. The observed data exclude, at 95% confidence level, the mass range below 5.3 TeV for excited quarks and 7.1 TeV (4.4 TeV) for quantum black holes in the Arkani-Hamed-Dimopoulos-Dvali (Randall-Sundrum) model with six (one) extra dimensions.

Place, publisher, year, edition, pages
2018. Vol. 78, article id 102
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-347242DOI: 10.1140/epjc/s10052-018-5553-2ISI: 000424102800003OAI: oai:DiVA.org:uu-347242DiVA, id: diva2:1193876
Funder
Swedish Research CouncilEU, European Research CouncilEU, FP7, Seventh Framework ProgrammeEU, Horizon 2020German Research Foundation (DFG)European Science Foundation (ESF)
Note

ATLAS Collaboration, for complete list of authors see https://doi.org/10.1140/epjc/s10052-018-5553-2

Available from: 2018-03-28 Created: 2018-03-28 Last updated: 2018-03-28Bibliographically approved

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Bergeås, Elin KuutmannBokan, PetarBrenner, RichardEkelöf, TordEllert, MattiasFerrari, ArnaudGradin, P.O. JoakimIsacson, Max F.Mårtensson, Mikael U.F.Öhman, HenrikRangel-Smith, CamillaSales De Bruin, Pedro H.
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