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Search for supersymmetry in events with photons, bottom quarks, and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 7 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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Number of Authors: 2897
2013 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 719, no 4-5, 261-279 p.Article in journal (Refereed) Published
Abstract [en]

A search has been performed for the experimental signature of an isolated photon with high transverse momentum, at least one jet identified as originating from a bottom quark, and high missing transverse momentum. Such a final state may originate from supersymmetric models with gauge-mediated supersymmetry breaking in events in which one of a pair of higgsino-like neutralinos decays into a photon and a gravitino while the other decays into a Higgs boson and a gravitino. The search is performed using the full dataset of 7 TeV proton-proton collisions recorded with the ATLAS detector at the LHC in 2011, corresponding to an integrated luminosity of 4.7 fb(-1). A total of 7 candidate events are observed while 7.5 +/- 2.2 events are expected from the Standard Model background. The results of the search are interpreted in the context of general gauge mediation to exclude certain regions of a benchmark plane for higgsino-like neutralino production.

Place, publisher, year, edition, pages
2013. Vol. 719, no 4-5, 261-279 p.
Keyword [en]
Supersymmetry, Gauge mediation, Higgs boson
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-120713DOI: 10.1016/j.physletb.2013.01.041ISI: 000315316900006Scopus ID: 2-s2.0-84873569776OAI: oai:DiVA.org:kth-120713DiVA: diva2:616181
Funder
Swedish Research Council
Note

QC 20130415. Author count: 2897

Available from: 2013-04-15 Created: 2013-04-15 Last updated: 2017-12-06Bibliographically approved

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Strandberg, Jonas

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