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dc.contributor.authorArhrib, A.-
dc.contributor.authorBenbrik, Rachid-
dc.contributor.authorChabab, M.-
dc.contributor.authorMoultaka, G.-
dc.contributor.authorRahili, L.-
dc.identifierdoi: 10.1007/JHEP04(2012)136-
dc.identifiere-issn: 1029-8479-
dc.identifier.citationJournal of High Energy Physics: 136 (2012)-
dc.descriptionOpen Access: This article is distributed under the terms of the Creative Commons Attribution License.-
dc.description.abstractWe study the two photon decay channel of the Standard Model-like component of the CP-even Higgs bosons present in the type II Seesaw Model. The corresponding cross-section is found to be significantly enhanced in parts of the parameter space, due to the (doubly-)charged Higgs bosons' (H ±±)H ± virtual contributions, while all the other Higgs decay channels remain Standard Model(SM)-like. In other parts of the parameter space H ±± (and H ±) interfere destructively, reducing the two photon branching ratio tremendously below the SM prediction. Such properties allow to account for any excess such as the one reported by ATLAS/CMS at ≈ 125 GeV if confirmed by future data; if not, for the fact that a SM-like Higgs exclusion in the diphoton channel around 114-115 GeV as reported by ATLAS, does not contradict a SM-like Higgs at LEP(!), and at any rate, for the fact that ATLAS/CMS exclusion limits put stringent lower bounds on the H ±± mass, particularly in the parameter space regions where the direct limits from same-sign leptonic decays of H ±± do not apply. © SISSA 2012.-
dc.description.sponsorshipA.A. and M.C. would like to thank NCTS-Taiwan for partial support. This work was supported by Programme Hubert Curien, Volubilis, AI nº: MA/08/186. We also acknowledge the ICTP-IAEA Training Educational Program for partial support, as well as the LIA (International Laboratory for Collider Physics-ILCP).-
dc.relation.isversionofPublisher's version-
dc.subjectHiggs physics-
dc.subjectBeyond standard model-
dc.titleHiggs boson decay into 2 photons in the type II Seesaw model-
dc.description.versionPeer Reviewed-
dc.contributor.funderNational Center for Theoretical Sciences (Taiwan)-
dc.contributor.funderMinistère des Affaires étrangères (France)-
dc.contributor.funderAbdus Salam International Centre for Theoretical Physics-
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