High Energy Physics Seminar-“On Field theory of the Fermi function” with Prof. Richard Hill
Physics Seminar
November 6, 2023
11:00 AM - 12:00 PM
Location
SES 2418
Calendar
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Title: “On Field theory of the Fermi function”
Abstract: The Fermi function F ( Z, E ) accounts for QED corrections to beta decays that are enhanced at either small electron velocity β or large nuclear charge Z. For precision applications, the Fermi function must be combined with other radiative corrections and with scale- and scheme-dependent hadronic matrix elements. We formulate the Fermi function as a field theory object and present a new factorization formula for QED radiative corrections to beta decays. We provide new results for the anomalous dimension of the corresponding effective operator complete through three loops, and resum perturbative logarithms and π-enhancements with renormalization group methods. Our results are important for tests of fundamental physics with precision beta decay and related processes.
Date posted
Oct 20, 2023
Date updated
Oct 20, 2023