Phenomenological Constraints on Patterns of Supersymmetry Breaking

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dc.creatorEllis, J.
dc.creatorOlive, K. A.
dc.creatorSantoso, Y.
dc.creatorSpanos, V. C.
dc.date2003-05-20
dc.date.accessioned2026-07-07T10:28:49Z
dc.date.available2026-07-07T10:28:49Z
dc.descriptionSpecific models of supersymmetry breaking predict relations between the trilinear and bilinear soft supersymmetry breaking parameters A_0 and B_0 at the input scale. In such models, the value of tan beta can be calculated as a function of the scalar masses m_0 and the gaugino masses m_{1/2}, which we assume to be universal. The experimental constraints on sparticle and Higgs masses, b to s gamma decay and the cold dark matter density Omega_{CDM} h^2 can then be used to constrain tan beta in such specific models of supersymmetry breaking. In the simplest Polonyi model with A_0 = (3 - sqrt{3})m_0 = B_0 + m_0, we find 11 < tan beta < 20 (tan beta ~ 4.15) for mu > 0 (mu < 0). We also discuss other models with A_0 = B_0 + m_0, finding that only the range -1.9 < A_0/m_0 < 2.5 is allowed for mu > 0, and the range 1.25 < A_0/m_0 < 4.8 for mu < 0. In these models, we find no solutions in the rapid-annihilation `funnels' or in the `focus-point' region. We also discuss the allowed range of tan beta in the no-scale model with A_0 = B_0 = 0. In all these models, most of the allowed regions are in the chi - stau_1 coannihilation `tail'.
dc.description17 pages LaTeX, 9 eps figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0305212
dc.identifierhttp://arxiv.org/abs/hep-ph/0305212
dc.identifierPhys.Lett.B573:162-172,2003
dc.identifierdoi:10.1016/j.physletb.2003.08.056
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177581
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titlePhenomenological Constraints on Patterns of Supersymmetry Breaking
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