Please use this identifier to cite or link to this item: http://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/2586
Title: Nuclear transition matrix elements for double-β decay within PHFB model
Authors: Rath, P. K.
Chandra, R.
Chaturvedi, K.
Raina, P. K.
Keywords: double beta decay
nuclear transition matrix elements
Majoron models
short range correlations
Majorana neutrino mass
Issue Date: 1-Sep-2021
Abstract: Employing the projected-Hartree-Fock-Bogoliubov (PHFB) approach, nuclear transition matrix elements (NTMEs) have been calculated to study the three complementary modes of β −β − decay, namely two neutrino β −β − (2νβ−β −) decay, neutrinoless β −β − (0νβ−β −) decay within mass mechanism and Majoron accompanied 0νβ−β − (0νβ−β −χ) decay. Reliability of HFB wave functions generated with four different parametrizations of the pairing plus multipolar type of effective two-body interaction has been ascertained by comparing a number of nuclear observables with the available experimental data. Specifically, the calculated NTMEs M(2ν) of 2νβ−β − decay have been compared with the observed data. Effects due to different parametrizations of effective two-body interactions, form factors and short-range correlations have been studied. It has also been observed that deformation plays a crucial role in the nuclear structure aspects of 0νβ−β − decay. Uncertainties in NTMEs calculated with wave functions generated with four different parametrizations of the pairing plus multipolar type of effective two-body interaction, dipole form factor and three different parametrizations of Jastrow type of short-range correlations within mechanisms involving light Majorana neutrinos, heavy Majorana neutrinos, sterile neutrinos and Majorons have been statistically estimated.
URI: http://localhost:8080/xmlui/handle/123456789/2586
Appears in Collections:Year-2019

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