Events Daily

Wednesday, December 6, 2023

The Muon g-2 puzzle
Carlos Wagner, University of Chicago and Argonne National Laboratory
Event Type: HEP Seminar
Time: 2:00 PM - 3:00 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: The muon anomalous magnetic moment, g-2, has been used as a relevant precision measurement, since it is sensitive to the presence of new particles in a wide range of mass scales. The current g-2 measurement at the Fermilab National Laboratory has an unprecedented level of precision, and can be therefore used to probe the SM g-2 prediction. At the level required to probe the theory, however, one needs to calculate the non-perturbative hadronic corrections accurately. Two different non-perturbative approaches have been used to compute these corrections, one based on electron scattering data and dispersion relations and the other based on lattice gauge theory calculations. These computations give results that disagree with each other at a level that prevents the possibility of probing the presence of new physics. In this talk I will expand on this situation and explain what would be the consequences of assuming that each of the hadronic vacuum polarization computations is correct, and I will also analyze a possible way of reconciling these two discrepant computations.

Link to the Event Video

CCPP Pheno Journal Club
Event Type: CCPP Pheno Journal Club
Time: 3:30 PM - 4:30 PM
Location: 726 Broadway, 902, Lg Conf