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Updated constraints on triplet vev in the Georgi Machacek model

2025/01/29 by Swagata Ghosh, Ghosh, Swagata · 1 citation
Decision Sciences · Economics, Econometrics and Finance · Engineering · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Reservoir Engineering and Simulation Methods #Simulation Techniques and Applications #Stochastic processes and financial applications

paper · pdf · doi:10.48550/arxiv.2501.17462

openalex publication_date 2025/01/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The Georgi-Machacek model containing singly as well as doubly charged Higgs bosons besides more than one neutral Higgs bosons preserves the custodial symmetry at the tree level. In addition to the doublet vacuum expectation value (vev) v1 this model has one triplet vev v2, which was most strongly bounded from the above as a function of the custodial triplet mass m3 previously by the b → s γ data. The observed data from the ATLAS and CMS experiments at the LHC for √(s) = 13 TeV for the channels p p → t t, t → H+ b, H+ → cs, τ+ ντ for the low mass charged Higgs set new limits on the triplet vev as a function of light charged Higgs boson afterward. Subsequent ATLAS data for the decay H± → τ± ντ updates the limit on v2 from the above as a function of m3. The present above limits on v2 is now updated to 6.3 - 13.1 GeV from the previous value of 7.8 - 17.4 GeV for the light custodial triplet mass m3 ranging from 130 to 160 GeV.

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