Mirror World, Supersymmetric Axion and Gamma Ray Bursts

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dc.creatorGianfagna, L.
dc.creatorGiannotti, M.
dc.creatorNesti, F.
dc.date2004-09-15
dc.date2004-09-28
dc.date.accessioned2026-07-07T10:49:15Z
dc.date.available2026-07-07T10:49:15Z
dc.descriptionA modification of the relation between axion mass and the PQ constant permits a relaxation of the astrophysical constraints, considerably enlarging the allowed axion parameter space. We develop this idea in this paper, discussing a model for an {\it ultramassive} axion, which essentially represents a supersymmetric Weinberg-Wilczek axion of the mirror world. The experimental and astrophysical limits allow a PQ scale f_a ~ 10^4-10^6 GeV and a mass m_a ~ 1MeV, which can be accessible for future experiments. On a phenomenological ground, such an {\it ultramassive} axion turns out to be quite interesting. It can be produced during the gravitational collapse or during the merging of two compact objects, and its subsequent decay into e+e- provides an efficient mechanism for the transfer of the gravitational energy of the collapsing system to the electron-positron plasma. This could resolve the energy budget problem in the Gamma Ray Bursts and also help in understanding the SN type II explosion phenomena.
dc.description20 pages, 5 eps figures, added footnote and references
dc.identifierhttps://arxiv.org/abs/hep-ph/0409185
dc.identifierhttp://arxiv.org/abs/hep-ph/0409185
dc.identifierJHEP0410:044,2004
dc.identifierdoi:10.1088/1126-6708/2004/10/044
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184154
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleMirror World, Supersymmetric Axion and Gamma Ray Bursts
dc.typetext

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