The intermediate scale MSSM, the Higgs mass and F-theory unification

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Show simple item record Ibáñez, Luis E. Marchesano, Fernando Regalado, Diego Valenzuela, Irene
dc.contributor.other UAM. Departamento de Física Teórica es_ES 2014-11-11T16:40:08Z 2014-11-11T16:40:08Z 2012-07-31
dc.identifier.citation Journal of High Energy Physics 2012.7 (2012): 195 en_US
dc.identifier.issn 1126-6708 (print) es_ES
dc.identifier.issn 1029-8479 (online) es_ES
dc.description Journal of High Energy Physics 2012.7 (2012): 195 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA) en_US
dc.description.abstract Even if SUSY is not present at the Electro-Weak scale, string theory suggests its presence at some scale Mss below the string scale Ms to guarantee the absence of tachyons. We explore the possible value of Mss consistent with gauge coupling unification and known sources of SUSY breaking in string theory. Within F-theory SU(5) unification these two requirements fix Mss ≃ 5 × 10 10 GeV at an intermediate scale and a unification scale Mc ≃ 3 × 10 14 GeV. As a direct consequence one also predicts the vanishing of the quartic Higgs SM self-coupling at Mss ≃ 10 11 GeV. This is tantalizingly consistent with recent LHC hints of a Higgs mass in the region 124-126 GeV. With such a low unification scale Mc ≃ 3 × 10 14 GeV one may worry about too fast proton decay via dimension 6 operators. However in the F-theory GUT context SU(5) is broken to the SM via hypercharge flux. We show that this hypercharge flux deforms the SM fermion wave functions leading to a suppression, avoiding in this way the strong experimental proton decay constraints. In these constructions there is generically an axion with a scale of size f a ≃ Mc/(4π) 2 ≃10 12 GeV which could solve the strong CP problem and provide for the observed dark matter. The price to pay for these attractive features is to assume that the hierarchy problem is solved due to anthropic selection in a string landscape en_US
dc.description.sponsorship This work has been partially supported by the grants FPA 2009-09017, FPA 2009-07908, Consolider-CPAN (CSD2007-00042) from the MICINN, HEPHACOS-S2009/ESP1473 from the C.A. de Madrid and the contract “UNILHC” PITN-GA-2009-237920 of the European Commission. F.M. is supported by the Ramón y Cajal programme through the grant RYC-2009-05096 and by the People Programme of FP7 (Marie Curie Auction) through the REA grant agreement PCIG10-GA-2011-304023. D.R. is supported through the FPU grant AP2010-5687 en_US
dc.format.extent 41 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Springer Verlag en_US
dc.relation.ispartof Journal of High Energy Physics en_US
dc.rights © SISSA 2012 en_US
dc.subject.other F-Theory es_ES
dc.subject.other GUT es_ES
dc.subject.other Compactification and string models es_ES
dc.subject.other Supersymmetry breaking es_ES
dc.title The intermediate scale MSSM, the Higgs mass and F-theory unification es_ES
dc.type article es_ES
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1007/JHEP07(2012)195 es_ES
dc.identifier.publicationfirstpage 195 es_ES
dc.identifier.publicationissue 7 es_ES
dc.identifier.publicationlastpage 195 es_ES
dc.identifier.publicationvolume 2012 es_ES
dc.relation.projectID Comunidad de Madrid. S2009/ESP-1473/HEPHACOS es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/304023 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess es_ES
dc.authorUAM Valenzuela Agüí, Irene (265131)

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