Lepton-number-violating decays of heavy flavors induced by doubly-charged Higgs boson

被引：12

作者：

Quintero, Nestor ^{[1
]}

机构：

[1] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Fis, Mexico City 07000, DF, Mexico

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 05期

关键词：

DOUBLE-BETA DECAY; NEUTRINO MASSES; SCALAR BOSONS; SEARCH; MODEL; TRIPLET; SYMMETRY; MIXINGS; QUARK; LHC;

D O I：

10.1103/PhysRevD.87.056005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study lepton-number-violating (LNV) decays of heavy flavors (tau lepton and top quark) induced by a doubly-charged Higgs boson in the Higgs triplet model. It is found that the branching fractions of LNV tau(-) -> l(+)M(1)(-)M(2)(-) decays are highly suppressed compared with the current experimental limits. On the other hand, for LNV top-quark decays, the most optimistic branching ratios for t -> bl(+)l(+)W(-) turn out to be at the level of similar to 10(-7) - 10(-8). The observation of these rare top-quark decays would be a clear signal of LNV processes, and their nonobservation would allow us to constrain the parameters of the Higgs triplet model. DOI: 10.1103/PhysRevD.87.056005

引用

页数：6

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