arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1810.04889hep-ph
收藏

含$Z_8 \times Z_2$的左右对称模型中双织构零中微子质量的唯象

Phenomenology of two texture zero neutrino mass in left-right symmetric model with $Z_8 \times Z_2$

Happy Borgohain, Mrinal Kumar Das

摘要:

在自然存在I型和II型跷跷板的左右对称模型(LRSM)框架下,对中微子质量矩阵$M_ν$进行了有利于两个零织构的唯象研究. I型跷跷板质量项被认为是遵循三重混合(TM)模式。这些纹理零结构的对称实现已被实现使用离散循环交换$Z8\times Z2$群LRSM。我们研究了中微子振荡数据所支持的六种常见的零类织构:A1、A2、B1、B2、B3和B4。我们主要关注这些零质量矩阵在LRSM方案中的低能现象如无中微子双β衰变(NDBD)和轻子味破坏(LFV)中的意义。对于NDBD,我们只考虑了来自纯RH流的图和来自带电Higgs标量的图的主要新物理贡献,而忽略了来自左右规范玻色子混合和重轻中微子混合的贡献。额外规范玻色子和标量的质量被认为是TeV量级,这在对撞机上是可以达到的。

英文摘要:

We have done a phenomenological study on the neutrino mass matrix $M_ν$ favoring two zero texture in the framework of left-right symmetric model (LRSM) where type I and type II seesaw naturally occurs. The type I seesaw mass term is considered to be following a trimaximal mixing (TM) pattern. The symmetry realizations of these texture zero structures has been realized using the discrete cyclic abelian $Z8\times Z2$ group in LRSM. We have studied six of the popular texture zero classes named as A1, A2, B1, B2, B3 and B4 favoured by neutrino oscillation data in our analysis. We basically focused on the implications of these texture zero mass matrices in low energy phenomenon like neutrinoless double beta decay (NDBD) and lepton flavour violation (LFV) in LRSM scenario. For NDBD, we have considered only the dominant new physics contribution coming from the diagrams containing purely RH current and another from the charged Higgs scalar while ignoring the contributions coming from the left-right gauge boson mixing and heavy light neutrino mixing. The mass of the extra gauge bosons and scalars has been considered to be of the order of TeV scale which is accessible at the colliders.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑