Nuclear Seminar: "Precise and accurate theory of nuclear beta decays as Standard Model tests"

Date: 
Mon, 25/12/202314:30-15:30
Location: 
Danciger B Building, Seminar room
Lecturer:  Doron Gazit, Hebrew University of Jerusalem

Abstract: 
Precision measurements capture an increasing amount of attention in probing physics beyond the Standard Model (BSM). Worldwide, a multitude of experiments aim at reaching high precision, ~0.1% , and will have comparable control over systematic uncertainties. By this, these experiments will surpass LHC constraints on models of BSM physics.
These efforts entail a need in Standard-Model predictions of the pertinent beta-decay observables of comparable accuracy. In this talk I will describe the theoretical efforts, which focus on identifying, characterizing and quantifying uncertainties in the challenging realm of nuclear physics as a strongly interacting effective field theory of QCD. This involves consideration of corrections that have not previously been thoroughly investigated, e.g., the effect of the nuclear finite size on Coulomb interactions, recoil corrections, etc. For many of these an accurate result requires forefront nuclear-structure calculations.
Finally, I will describe the effort at the Hebrew University, which uniquely combines experimental, in Guy Ron's group, and theoretical fronts, in my group, utilizing state-of-the-art methods and covering multiple aspects of BSM physics.