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
2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 719, no 4-5, 261-279 p.Article in journal (Refereed) Published
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.
Supersymmetry, Gauge mediation, Higgs boson
IdentifiersURN: urn:nbn:se:su:diva-89591DOI: 10.1016/j.physletb.2013.01.041ISI: 000315316900006OAI: oai:DiVA.org:su-89591DiVA: diva2:618921