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Search for Higgs and Z Boson Decays to J/psi gamma and Upsilon(nS)gamma 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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2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 114, no 12, 121801Article in journal (Refereed) Published
Abstract [en]

A search for the decays of the Higgs and Z bosons to J/psi gamma and Upsilon(nS)gamma (n = 1,2,3) is performed with pp collision data samples corresponding to integrated luminosities of up to 20.3 fb(-1) collected at root s = 8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/psi gamma final state the limits are 1.5 x 10(-3) and 2.6 x 10(-6) for the Higgs and Z boson decays, respectively, while in the Upsilon(1S, 2S, 3S)gamma. final states the limits are (1.3, 1.9, 1.3) x 10(-3) and (3.4, 6.5, 5.4) x 10(-6), respectively.

Place, publisher, year, edition, pages
American Physical society , 2015. Vol. 114, no 12, 121801
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-165772DOI: 10.1103/PhysRevLett.114.121801ISI: 000352074300004PubMedID: 25860734Scopus ID: 2-s2.0-84926149242OAI: oai:DiVA.org:kth-165772DiVA: diva2:808774
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QC 20150429

Available from: 2015-04-29 Created: 2015-04-29 Last updated: 2017-12-04Bibliographically approved

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Strandberg, Jonas

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