12-14 March 2018
TIFR, Mumbai
Asia/Kolkata timezone
FIG 2018
- tifrfig18@gmail.com
- 022- 22782562
Support
Nuclear Deformation and the search for neutrinoless double beta decay $(0\nu\beta\beta)$: A case study of $^{76}$Ge
Presented by Dr. D. AYANGEAKAA
on
13 Mar 2018
from
5:00 PM
to
5:30 PM
Type: Invited Talk
Content
Observation of neutrinoless double-beta decay $(0\nu\beta\beta)$ would both
demonstrate the Majorana nature of the neutrino and provide experimental access to its
absolute mass scale. A great deal of experimental effort is, therefore, being dedicated to
the detection of this rare process. However, results of nuclear structure calculations of
nuclear matrix elements which mediate the decay differ by up to a factor of three,
depending on the methodology. This translates into an order of magnitude variation
when considered in terms of the decay lifetime. Experimental input from a nuclear
structure perspective to constrain these calculations is, thus, imperative and significant
experimental work (e.g., studies of transfer reactions, gamma-ray spectroscopy, etc.)
has already been done in this context. In this talk, results of a high-precision Coulomb
excitation measurement of $^{76}$Ge, performed at Argonne National Laboratory
using GRETINA and CHICO2 will be presented. The results will be compared with
state-of-the-art Shell Model calculations and recently obtained $(n,n’\gamma)$, with
emphasis on demonstrating the importance of nuclear deformation in determining the
nuclear decay matrix element.
Place
Location: TIFR, Mumbai
Room: AG66
Primary authors
- Dr. D. AYANGEAKAA United States Naval Academy, Department of Physics, 572 Holloway Road, Annapolis, MD 21402 USA.