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Abstract:
While tritium is typically considered to be the preferred target material for CnuB capture experiments (such as PTOLEMY) it is advantageous to keep as many options available as possible. Some heavy elements are attractive due to their low Q-values and long half lives, but the theory underlying their beta decay spectrum is complicated by the fact that they are first forbidden non-unique transitions.
In this talk I will explain how a hierarchy of scales, namely the sizeable Coulomb potential near the nuclear surface as compared to the external momentum of the outgoing electron, simplifies the calculation. This is an old scheme (Behrens & Burhing) based on a systematic expansion of electron radial wavefunctions within the nucleus. We conclude that the neutrino capture cross section can be extracted from beta emitter half lives with a few percent precision. Some experimental implications will be sketched.
Biography:
Work Experience
California Instititute of Technology Passadena, CA
NTN Fellow – Supervisor: Mark Wise 2022 - 2025
University of Kentucky Lexington, KY
Postdoctoral Scholar – Supervisor: Richard J. Hill 2019 - 2022
Fermilab Batavia, IL
Intensity Frontier Fellow and Theory Visitor – Collaboration with Mu2e. 2019 - 2022
Education
Perimeter Institute for Theoretical Physics Waterloo, ON
Affiliate graduate student – Hosts: Itay Yavin and Cliff Burgess 2013 - 2019
McMaster University Hamilton, ON
Ph.D. Physics – Supervisor: Duncan O’Dell 2015 - 2019
McMaster University Hamilton, ON
M.Sc. Physics – Supervisor: Itay Yavin 2013 - 2015
University of Guelph Guelph, ON
B.Sc. Theoretical Physics – Thesis Supervisor: Luis Lehner 2009 - 2013
Online meeting room:
https://cern.zoom.us/j/67096412751?pwd=bUN3Q25mS0VCcVc0bjcvRVpHWmRSZz09
Meeting ID: 670 9641 2751
Passcode: 223332