# ICHEP 2020

28 July 2020 to 6 August 2020
virtual conference
Europe/Prague timezone

## A comparative study of 0νββ decay in symmetric and asymmetric left-right model

29 Jul 2020, 13:36
3m
virtual conference

#### virtual conference

Poster 02. Neutrino Physics

### Speaker

Supriya Senapati (Indian Institute of Technology, Bombay)

### Description

We study the new physics contributions to neutrinoless double beta decay ($0\nu\beta\beta$) in a TeV scale left-right model with spontaneous D-parity breaking mechanism where the values of the $SU(2)_L$ and $SU(2)_R$ gauge couplings, $g_L$ and $g_R$ are unequal. Neutrino mass is generated in the model via gauge extended inverse seesaw mechanism. We embed the model in a non-supersymmetric $SO(10)$ GUT with a purpose of quantifying the results due to the condition $g_{L} \neq g_{R}$. We compare the predicted numerical values of half life of $0\nu\beta\beta$ decay, effective Majorana mass parameter and other lepton number violating parameters for three different cases; (i) for manifest left-right symmetric model ($g_L = g_R$), (ii) for left-right model with spontaneous D parity breaking ($g_L \neq g_R$), (iii) for Pati-Salam symmetry with D parity breaking ($g_L \neq g_R$). We show how different contributions to $0\nu\beta\beta$ decay are suppressed or enhanced depending upon the values of the ratio $\frac{g_R}{g_L}$ that are predicted from successful gauge coupling unification.

### Primary author

Supriya Senapati (Indian Institute of Technology, Bombay)

### Co-authors

Mr Chayan Majumdar (Indian Institute of Technology, Bombay) Dr Prativa Pritimita (Indian Institute of Technology, Bombay) Dr Sudhanwa Patra (Indian Institute of Technology, Bhilai)