Cosmological Bounds on an Invisibly Decaying Higgs Boson

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dc.creatorBertolami, O.
dc.creatorBento, M. C.
dc.creatorRosenfeld, R.
dc.date2001-11-21
dc.date.accessioned2026-07-07T02:01:27Z
dc.date.available2026-07-07T02:01:27Z
dc.descriptionWe derive bounds on the Higgs boson coupling $g^{\prime}$ to a stable light scalar which is regarded as a collisional dark matter candidate. We study the behaviour of this scalar, that we refer to as phion ($ϕ$), in the early Universe for different ranges of its mass. We find that a phion in the mass range of $100 \mev$ is excluded, while if its mass is about $1 \gev$, a rather large coupling constant, $g^{\prime} \gsim 2$, and $m_h \lsim 130 \gev$ are required in order to avoid overabundance. In the latter case, the invisible decay mode of the Higgs boson is dominant.
dc.descriptionContribution to COSMO-01, Rovaniemi, Finland. 9 pages, gzipped tar format, Latex plus 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0111415
dc.identifierhttp://arxiv.org/abs/astro-ph/0111415
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3752
dc.subjectAstrophysics
dc.titleCosmological Bounds on an Invisibly Decaying Higgs Boson
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