Ben Allanach (Cambridge)

2:00pm Monday July 24, 2023
Conference Room


By throwing away theories beyond the Standard Model that are not of interest, we
may arrive at some that are. We use anomaly cancellation to constrain extensions by an additional
U(1) gauge group factor. Once such an additional gauge factor is spontaneously broken, the resulting
Z’ gauge boson has potential phenomenological uses, for example to ameliorate tensions between
measurements of certain flavour-changing B decays and their Standard Model predictions. We compare
and contrast one such Z’ against a simple bottom-up leptoquark model, to look for statistical preference
or lack thereof.