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2013•arXiv (Cornell University)Open access

Vacuum Stability, Perturbativity, EWPD and Higgs-to-diphoton in Type II\n Seesaw

Eung Jin Chun, Hyun Min Lee, Pankaj Sharma

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Abstract

We study constraints from perturbativity and vacuum stability as well as the\nEWPD in the type II seesaw model. As a result, we can put stringent limits on\nthe Higgs triplet couplings depending on the cut-off scale. The EWPD tightly\nconstrain the Higgs triplet mass splitting to be smaller than about 40 GeV.\nAnalyzing the Higgs-to-diphoton rate in the allowed parameter region, we show\nhow much it can deviate from the Standard Model prediction for specific\nparameter points.\n

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We study constraints from perturbativity and vacuum stability as well as the\nEWPD in the type II seesaw model. As a result, we can put stringent limits on\nthe Higgs triplet couplings depending on the cut-off scale. The EWPD tightly\nconstrain the Higgs triplet mass splitting to be smaller than about 40 GeV.\nAnalyzing the Higgs-to-diphoton rate in the allowed parameter region, we show\nhow much it can deviate from the Standard Model prediction for specific\nparameter points.\n

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Available abstract

We study constraints from perturbativity and vacuum stability as well as the\nEWPD in the type II seesaw model. As a result, we can put stringent limits on\nthe Higgs triplet couplings depending on the cut-off scale. The EWPD tightly\nconstrain the Higgs triplet mass splitting to be smaller than about 40 GeV.\nAnalyzing the Higgs-to-diphoton rate in the allowed parameter region, we show\nhow much it can deviate from the Standard Model prediction for specific\nparameter points.\n

Key concepts: Higgs boson, Seesaw molecular geometry, Particle physics, Physics, Standard Model (mathematical formulation), Stability (learning theory), Scale (ratio), Type (biology)

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