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Search for Scalar Diphoton Resonances in the Mass Range 65-600 GeV with the ATLAS Detector in pp Collision Data at root s=8 TeV
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: 2890
2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 113, no 17Article in journal (Refereed) Published
Abstract [en]

A search for scalar particles decaying via narrow resonances into two photons in the mass range 65-600 GeV is performed using 20.3 fb(-1) of root s = 8 TeV pp collision data collected with the ATLAS detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95% confidence level on the production cross section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches.

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2014. Vol. 113, no 17
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URN: urn:nbn:se:kth:diva-156863DOI: 10.1103/PhysRevLett.113.171801ISI: 000343769900007Scopus ID: 2-s2.0-84908140992OAI: oai:DiVA.org:kth-156863DiVA: diva2:768240
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QC 20141203

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

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Strandberg, Jonas

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