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Search for diphoton resonances in the mass range from 150 to 850 GeV in pp collisions at $\sqrt{s}$= 8 TeV


CMS Collaboration; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Aarrestad, T K; Amsler, C; Canelli, F; Chiochia, V; De Cosa, A; Galloni, C; Hinzmann, A; Hreus, T; Kilminster, B; Lange, C; Ngadiuba, J; Pinna, D; Robmann, P; Ronga, F J; Salerno, D; Taroni, S; Yang, Y; et al (2015). Search for diphoton resonances in the mass range from 150 to 850 GeV in pp collisions at $\sqrt{s}$= 8 TeV. Physics Letters B, 750:494-519.

Abstract

Results are presented of a search for heavy particles decaying into two photons. The analysis is based on a 19.7 $fb^{−1}$ sample of proton–proton collisions at s=8TeV collected with the CMS detector at the CERN LHC. The diphoton mass spectrum from 150 to 850 GeV is used to search for an excess of events over the background. The search is extended to new resonances with natural widths of up to 10% of the mass value. No evidence for new particle production is observed and limits at 95% confidence level on the production cross section times branching fraction to diphotons are determined. These limits are interpreted in terms of two-Higgs-doublet model parameters.

Abstract

Results are presented of a search for heavy particles decaying into two photons. The analysis is based on a 19.7 $fb^{−1}$ sample of proton–proton collisions at s=8TeV collected with the CMS detector at the CERN LHC. The diphoton mass spectrum from 150 to 850 GeV is used to search for an excess of events over the background. The search is extended to new resonances with natural widths of up to 10% of the mass value. No evidence for new particle production is observed and limits at 95% confidence level on the production cross section times branching fraction to diphotons are determined. These limits are interpreted in terms of two-Higgs-doublet model parameters.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:7 June 2015
Deposited On:17 Feb 2016 15:36
Last Modified:05 Apr 2016 20:02
Publisher:Elsevier
ISSN:0370-2693
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2015.09.062
Related URLs:http://arxiv.org/abs/1506.02301v2 (Organisation)

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