Vacuum stability, perturbativity, EWPD and Higgs-to-diphoton rate in type II seesaw models

被引:123
作者
Chun, Eung Jin [1 ]
Lee, Hyun Min [1 ]
Sharma, Pankaj [1 ]
机构
[1] Korea Inst Adv Study, Seoul 130722, South Korea
基金
新加坡国家研究基金会;
关键词
Higgs Physics; Beyond Standard Model; Neutrino Physics; NEUTRINO MASSES; P(P)OVER-BAR COLLISIONS; ROOT-S=1.96 TEV; SEARCH; MIXINGS; BOSONS; BOUNDS;
D O I
10.1007/JHEP11(2012)106
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study constraints from perturbativity and vacuum stability as well as the EWPD in the type II seesaw model. As a results, we can put stringent limits on the Higgs triplet couplings depending on the cut-off scale. The EWPD tightly constrain the Higgs triplet mass splitting to the smaller than 40 GeV. Analyzing the Higgs-to-diphoton rate in the allowed parameter region, we show a possible enhancement by up to 100 % and 50 % for the cut-off scale of 100 TeV and 10(19) GeV, respectively, if the doubly charged Higgs boson mass is as low as 100 GeV.
引用
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页数:15
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