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High Energy Physics - Phenomenology

arXiv:1611.01021 (hep-ph)
[Submitted on 3 Nov 2016]

Title:One-loop pseudo-Goldstone masses in the minimal $SO(10)$ Higgs model

Authors:Lukáš Gráf, Michal Malinský, Timon Mede, Vasja Susič
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Abstract:We calculate the prominent perturbative contributions shaping the one-loop scalar spectrum of the minimal non-supersymmetric renormalizable $SO(10)$ Higgs model whose unified gauge symmetry is spontaneously broken by an adjoint scalar. Focusing on its potentially realistic $45\oplus 126$ variant in which the rank is reduced by a VEV of the 5-index self-dual antisymmetric tensor, we provide a thorough analysis of the corresponding one-loop Coleman-Weinberg potential, paying particular attention to the masses of the potentially tachyonic pseudo-Goldstone bosons (PGBs) transforming as $(8,1,0)$ and $(1,3,0)$ under the Standard Model gauge group. The results confirm the assumed existence of extended regions in the parameter space supporting a locally stable SM-like quantum vacuum inaccessible at the tree-level. The effective potential (EP) tedium is compared to that encountered in the previously studied $45\oplus 16$ $SO(10)$ Higgs model where the polynomial corrections to the relevant pseudo-Goldstone masses turn out to be easily calculable within a very simplified purely diagrammatic approach.
Comments: 25 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)
Report number: CETUP2016-005
Cite as: arXiv:1611.01021 [hep-ph]
  (or arXiv:1611.01021v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1611.01021
Journal reference: Phys. Rev. D 95, 075007 (2017)
Related DOI: https://doi.org/10.1103/PhysRevD.95.075007

Submission history

From: Michal Malinský [view email]
[v1] Thu, 3 Nov 2016 13:59:57 UTC (74 KB)
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