BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:INPP Seminar | Daniel Ayangeakaa\, March 21\n\nThe Institute of Nuclear and Particle Physics seminar series presents Daniel Ayangeakaa of UNC Chapel Hill discussing "Nuclear Structure as a necessary input to deter mining the neutrino mass via neutrinoless double beta decay (0nbb)" on Marc h 21 at 4 p.m. in Lindley 321.\n\n \n\nAbstract: Neutrinoless double-beta ( 0nbb) decay is one of the most promising experimental phenomena capable of probing the fundamental properties of the neutrino. The observation of this hypothetical weak-interaction process would signal a violation of total le pton number conservation and establish the Majorana nature of the neutrino. It will also provide experimental access to the absolute neutrino mass sca le\, provided that the nuclear matrix elements (NME) mediating the decay ar e reliably known. However\, results of current nuclear structure calculatio ns of the NMEs are found to differ by up to a factor of 3\, depending on th e methodology. Experimental input from a nuclear structure perspective to c onstrain these calculations is\, thus\, essential as this would allow model s to be selected or developed based on reproducible benchmarking criteria. In this talk\, I will present results from a high-precision Coulomb excitat ion measurement aimed at providing experimental data as input to theoretica l models used in calculating 0nbb NME. The talk will focus primarily on the electromagnetic properties of low-lying states in 76Ge\, a nucleus with on e of the highest 0nbb discovery potential. The experiment was performed at the ATLAS facility at the Argonne National Laboratory using the advanced ga mma-ray tracking array\, GRETINA\, and the charged-particle detector\, CHIC O2. The influence of the axial asymmetry parameter on the shape of this nuc leus along with the results of multiconfiguration mixing calculations carri ed out within the framework of the triaxial rotor model will be highlighted . Most importantly\, new experimental evidence characterizing the precise n ature of triaxial deformation in 76Ge will be presented. The results will a lso be compared with state-of-the-art shell model calculations\, with empha sis on demonstrating the importance of nuclear deformation in determining t he nuclear decay matrix elements relevant to neutrinoless double-beta decay (0nbb). DTEND:20230321T210000Z DTSTAMP:20241005T092646Z DTSTART:20230321T200000Z GEO:39.326188;-82.101779 LOCATION:Lindley Hall\, 321 SEQUENCE:0 SUMMARY:INPP Seminar | Daniel Ayangeakaa\, March 21 UID:tag:localist.com\,2008:EventInstance_42404164810157 URL:https://calendar.ohio.edu/event/inpp_seminar_march_21_2023 END:VEVENT END:VCALENDAR