An Upper Bound on the Higgs Boson Mass from Yukawa Unification and a Comment on Vacuum Stability Constraints

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dc.creatorPolonsky, Nir
dc.date1994-06-03
dc.date.accessioned2026-07-07T03:56:53Z
dc.date.available2026-07-07T03:56:53Z
dc.descriptionOnly small regions in the $m_{t} - \tanβ$ plane are allowed when considering simultaneously (assuming the MSSM) coupling constant unification and (minimal) GUT relations among Yukawa couplings (i.e., $h_{b} = h_τ$ at the unification point). In particular, if $m_{t} \simle 175$ GeV we find that only $1 \simle \tanβ\simle 1.5$ or $\tanβ\simgr 40 \pm 10$ is allowed. The former implies that the light Higgs boson is $\simle 110$ GeV and, in principle, visible to LEPII. The prediction for the Higgs boson mass in the $\tanβ\approx 1$ scenario is discussed and uncertainties related to ($i$) vacuum stability constraints, ($ii$) different methods for calculating the Higgs boson mass, ($iii$) two-loop calculations and ($iv$) GUT corrections are briefly reviewed. It is shown that large left-right mixing between the $t$-scalars can significantly enhance the Higgs boson mass. That and an ambiguity in the size of the two-loop correction lead to our conservative upper bound of 110 GeV. Vacuum stability considerations constrain the $t$-scalar mixing and slightly diminish the upper bound (depending on the value of $m_{t}$). Improved two-loop calculations are also expected to strengthen the bound.
dc.descriptiontalk presented at SUSY-94, 7 pages, LaTex, uuencoded postscript file (including 5 figures) is attached. Also available via anonymous ftp from dept.physics.upenn.edu (dir pub). Report No. UPR-0595T
dc.identifierhttps://arxiv.org/abs/hep-ph/9406225
dc.identifierhttp://arxiv.org/abs/hep-ph/9406225
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/45177
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAn Upper Bound on the Higgs Boson Mass from Yukawa Unification and a Comment on Vacuum Stability Constraints
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