Revisiting Majorana neutrino textures in the light of dark LMA

被引：3

作者：

Borgohain, Happy ^{[1
]}

Borah, Debasish ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Phys, Gauhati 781039, Assam, India

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2020年 / 47卷 / 12期

关键词：

texture zero; neutrinoless double beta decay; sterile neutrino; DOUBLE-BETA DECAY; OSCILLATIONS; ZEROS;

D O I：

10.1088/1361-6471/abb44c

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the possibility of texture zeros in Majorana light neutrino mass matrix in the light of dark large mixing angle (DLMA) solution to solar neutrino problem where solar mixing angle (sin(2) theta(12) similar or equal to 0.7) lies in the second octant instead of first octant in standard large mixing angle (LMA) scenario (sin(2) theta(12) similar or equal to 0.3). In three neutrino scenario, we find that LMA and DLMA solutions lead to different set of allowed and disallowed textures with one and two zeros. While being consistent with existing bounds from neutrino oscillation data, neutrinoless double beta decay and cosmology these allowed textures also lead to interesting correlations among light neutrino parameters which can distinguish LMA from DLMA solution. We also check the implications for texture zeros in 3 + 1 neutrino scenario using both LMA and DLMA solutions. While LMA and DLMA solutions do not play decisive role in ruling out texture zeros in this case, they do give rise to distinct predictions and correlations between light neutrino parameters.

引用

页数：27

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