The Triplet extension of the MSSM (TMSSM) alleviates the little hierarchy problem and provides a significant enhancement of the loop-induced diphoton rate of the lightest CP-even Higgs h . In this paper we pursue the analysis of the TMSSM Higgs phenomenology by computing for the first time the h → Z γ decay. Interestingly we find that the rates of loop-induced decays are correlated and their signal strengths can rise up to 40%-60% depending on the channel. We furthermore study the dark matter phenomenology of the TMSSM. The lightest neutralino is a good dark matter candidate in two regions. The first one is related to the Higgs and Z resonances and the LSP is mostly Bino. The second one is achieved for a mass larger than 90 GeV and the LSP behaves as the well-tempered neutralino. An advantage of the triplet contribution is that the well-tempered neutralino can be a Bino-Triplino mixture, relieving the problem of achieving M 2 ~ M 1 in unified scenarios. The dark matter constraints strongly affect the Higgs phenomenology, reducing the potential enhancements of the diphoton and of the Z γ channels by 20% at most. In the near future, dark matter direct searches and collider experiments will probe most of the parameter space where the neutralino is the dark matter candidate.
{ "_oai": { "updated": "2018-05-01T10:45:14Z", "id": "oai:repo.scoap3.org:3594" }, "authors": [ { "raw_name": "Chiara Arina", "affiliations": [ { "country": "France", "value": "Institut d\u2019Astrophysique de Paris, 98bis boulevard Arago, 75014 Paris, France" } ], "surname": "Arina", "given_names": "Chiara", "full_name": "Arina, Chiara" }, { "raw_name": "V\u00edctor Mart\u00edn-Lozano", "affiliations": [ { "country": "Spain", "value": "Instituto de F\u00edsica Te\u00f3rica UAM/CSIC and Departamento de F\u00edsica Te\u00f3rica, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain" } ], "surname": "Mart\u00edn-Lozano", "given_names": "V\u00edctor", "full_name": "Mart\u00edn-Lozano, V\u00edctor" }, { "raw_name": "Germano Nardini", "affiliations": [ { "country": "Germany", "value": "Fakult\u00e4t f\u00fcr Physik, Universit\u00e4t Bielefeld, D-33615 Bielefeld, Germany" }, { "country": "Germany", "value": "Deutsches Elektronen Synchrotron, Notkestrasse 85, D-22603 Hamburg, Germany" } ], "surname": "Nardini", "given_names": "Germano", "full_name": "Nardini, Germano" } ], "titles": [ { "source": "Springer/SISSA", "title": "Dark matter versus h \u2192 \u03b3\u03b3 and h \u2192 \u03b3 Z with supersymmetric triplets" } ], "dois": [ { "value": "10.1007/JHEP08(2014)015" } ], "publication_info": [ { "page_start": "015", "material": "article", "journal_title": "Journal of High Energy Physics", "year": 2014 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2014-08-12T00:00:00", "source": "Springer/SISSA", "method": "scoap3", "submission_number": "6f4b628e4d2711e8b67702163e01809a" }, "page_nr": [ 34 ], "license": [ { "url": "http://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "The Author(s)" } ], "control_number": "3594", "record_creation_date": "2014-08-12T00:00:00", "_files": [ { "checksum": "md5:ac2aabac82f7b4fec73127ab14e2c7ce", "filetype": "xml", "bucket": "5d6e6992-577b-438c-a5b2-112b8c7493a5", "version_id": "db86d1fa-5303-498c-958d-c660ab8379d9", "key": "10.1007/JHEP08(2014)015.xml", "size": 114050 }, { "checksum": "md5:2c767db35f05353e1a2bef244868ac66", "filetype": "pdf/a", "bucket": "5d6e6992-577b-438c-a5b2-112b8c7493a5", "version_id": "1b720bae-f834-406a-b53d-3942ceafb828", "key": "10.1007/JHEP08(2014)015_a.pdf", "size": 2379882 } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "astro-ph.CO" ], "value": "1403.6434" } ], "abstracts": [ { "source": "Springer/SISSA", "value": "The Triplet extension of the MSSM (TMSSM) alleviates the little hierarchy problem and provides a significant enhancement of the loop-induced diphoton rate of the lightest CP-even Higgs h . In this paper we pursue the analysis of the TMSSM Higgs phenomenology by computing for the first time the h \u2192 Z \u03b3 decay. Interestingly we find that the rates of loop-induced decays are correlated and their signal strengths can rise up to 40%-60% depending on the channel. We furthermore study the dark matter phenomenology of the TMSSM. The lightest neutralino is a good dark matter candidate in two regions. The first one is related to the Higgs and Z resonances and the LSP is mostly Bino. The second one is achieved for a mass larger than 90 GeV and the LSP behaves as the well-tempered neutralino. An advantage of the triplet contribution is that the well-tempered neutralino can be a Bino-Triplino mixture, relieving the problem of achieving M 2 ~ M 1 in unified scenarios. The dark matter constraints strongly affect the Higgs phenomenology, reducing the potential enhancements of the diphoton and of the Z \u03b3 channels by 20% at most. In the near future, dark matter direct searches and collider experiments will probe most of the parameter space where the neutralino is the dark matter candidate." } ], "imprints": [ { "date": "2014-08-04", "publisher": "Springer/SISSA" } ] }