Implications of the diboson excess for neutrinoless double beta decay and lepton flavor violation in TeV scale left-right symmetric model

被引：38

作者：

Awasthi, Ram Lal ^{[1
]}

Dev, P. S. Bhupal ^{[2
,3
]}

Mitra, Manimala ^{[1
]}

机构：

[1] Indian Inst Sci Educ & Res Mohali, Knowledge City, Sect 81, Sas Nagar 140306, Manauli, India

[2] Univ Manchester, Sch Phys & Astron, Consortium Fundamental Phys, Manchester M13 9PL, Lancs, England

[3] Tech Univ Munich, Phys Dept T30D, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW D | 2016年 / 93卷 / 01期

关键词：

MAJORANA NEUTRINOS; PP COLLISIONS; HEAVY NEUTRINOS; ROOT-S=8 TEV; SEARCH; MASSES; MIXINGS; BOSONS;

D O I：

10.1103/PhysRevD.93.011701

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Inspired by the recent diboson excess observed at the LHC and possible interpretation within a TeV-scale left-right symmetric framework, we explore its implications for low-energy experiments searching for lepton number and flavor violation. Assuming a simple type-II seesaw mechanism for neutrino masses, we show that for the right-handed (RH) gauge boson mass and coupling values required to explain the LHC anomalies, the RH contribution to the lepton number violating process of neutrinoless double beta decay (0 nu beta beta) is already constrained by current experiments for relatively low-mass (MeV-GeV) RH neutrinos. The future ton-scale 0 nu beta beta experiments could probe most of the remaining parameter space, irrespective of the neutrino mass hierarchy and uncertainties in the oscillation parameters and nuclear matrix elements. On the other hand, the RH contribution to the lepton flavor violating process of mu -> e gamma is constrained for relatively heavier (TeV) RH neutrinos, thus providing a complementary probe of the model. Finally, a measurement of the absolute light neutrino mass scale from future precision cosmology could make this scenario completely testable.

引用

页数：6

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