Events Daily

Wednesday, September 27, 2023

HEP Journal Club
Event Type: HEP Journal Club
Time: 12:30 PM - 1:30 PM
Location: 726 Broadway, 940, CCPP Seminar

Multiscale and Multiphysics Simulations for BSM Cosmology and Phenomenology
Josh Foster, Massachusetts Institute of Technology
Event Type: HEP Seminar
Time: 2:00 PM - 3:15 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: The modern era of particle phenomenology increasingly looks to the cosmos and the early universe for hints of high-scale physics Beyond the Standard Model. In these regimes, many of the best-motivated candidates for new physics and their signals emerge through nonlinear and nonperturbative dynamics that require large-scale numerical simulations to make sharp predictions that guide experimental and observational efforts. In this work, I will discuss two applications of large-scale computing to BSM cosmology: the simulation of topological defects in the axion field for predictions of the axion dark matter mass; and calculations of gravitational wave production in the nonlinear regime of early matter dominated cosmologies that could be detected with current or future observatories.

Link to the Event Video

The Two Scales of New Physics in Higgs Couplings
Gabriele Rigo, Saclay
Event Type: Informal HEP Talk
Time: 3:30 PM - 4:30 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: Higgs coupling deviations from Standard Model predictions contain information about two scales of Nature: that of new physics responsible for the deviation, and the scale where new bosons must appear. The two can coincide, but they do not have to. The scale of new bosons can be calculated by going beyond an effective field theory description of the coupling deviation. I will discuss model-independent upper bounds on the scale of new bosons for deviations in Higgs to WW and ZZ couplings, and explain how any measured deviation at present or future colliders requires the existence of new bosons within experimental reach. This has potentially interesting implications for naturalness.