Open AccessDouble beta decay without invoking closure
Author(s) -
G. Pantis,
J.D. Vergados
Publication year - 2020
Publication title -
hnps advances in nuclear physics
Language(s) - English
Resource type - Journals
eISSN - 2654-0088
pISSN - 2654-007X
DOI - 10.12681/hnps.2823
Subject(s) - closure (psychology) , context (archaeology) , matrix (chemical analysis) , beta (programming language) , double beta decay , physics , shell model , beta decay , nuclear physics , mathematics , statistical physics , computer science , atomic physics , chemistry , geology , law , chromatography , neutrino , political science , programming language , paleontology
The nuclear matrix elements of PU operators entering in the 0v ßß-decay of 76Ge-->76Se have been calculated explicitly in the context of QRPA within the model space 0f7/2 - 0h11/2. T h e validity of the closure approximation has been tested and seems to be quite satisfactory for those matrix elements which are not usually suppressed. Our results indicate that they are dominated by multipoles other than 0+ and 1+ and that the matrix elements are comparable to those of shell model calculations.