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Higgs dark matter in UEDs: A good WIMP with bad detection prospects
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.ORCID iD: 0000-0002-3525-8349
2012 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 715, no 1-3, 164-169 p.Article in journal (Refereed) Published
Abstract [en]

We study the first Kaluza-Klein excitation of the Higgs boson in universal extra dimensions as a dark matter candidate. The first-level Higgs boson could be the lightest Kaluza-Klein particle, which is stable due to the conservation of Kaluza-Klein parity, in non-minimal models where boundary localized terms modify the mass spectrum. We calculate the relic abundance and find that it agrees with the observed dark matter density if the mass of the first-level Higgs boson is slightly above 2 TeV, not considering coannihilations and assuming no relative mass splitting among the first-level Kaluza-Klein modes. In the case of coannihilations and a non-zero mass splitting, the mass of the first-level Higgs boson can range from 1 TeV to 4 TeV. We study also the prospects for detection of this dark matter candidate in direct as well as indirect detection experiments. Although the first-level Higgs boson is a typical weakly interacting massive particle, an observation in any of the conventional experiments is very challenging.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 715, no 1-3, 164-169 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-103976DOI: 10.1016/j.physletb.2012.07.037ISI: 000308519000022Scopus ID: 2-s2.0-84865319214OAI: oai:DiVA.org:kth-103976DiVA: diva2:562788
Funder
Swedish Research Council, 621-2011-3985
Note

QC 20121026

Available from: 2013-02-20 Created: 2012-10-25 Last updated: 2017-12-07Bibliographically approved

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Ohlsson, Tommy

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