Past Events

Mar 15, 2019 3:00 pm - Amber Roepe

Title: Background Estimation with the ABCD Method




The reference is meant to serve as a guide for the ABCD method and the software that has been developed. This presentation will go over the basics of the ABCD Method, look at the two different approaches for modeling, compare it to the widely-used Matrix Method, and discuss pitfalls of ABCD.

Mar 01, 2019 3:00 pm - Robert Wiley

Standard Model-Axion-Seesaw-Higgs Portal Inflation. Five problems of particle physics and cosmology solved in one stroke

We present a minimal extension of the Standard Model (SM) providing a consistent picture of particle physics from the electroweak scale to the Planck scale and of cosmology from inflation until today. Three right-handed neutrinos Ni, a new color triplet Q and a complex SM-singlet scalar σ, whose vacuum expectation value vσ1011 GeV breaks lepton number and a Peccei-Quinn symmetry simultaneously, are added to the SM. At low energies, the model reduces to the SM, augmented by seesaw generated neutrino masses and mixing, plus the axion. The latter solves the strong CP problem and accounts for the cold dark matter in the Universe. The inflaton is comprised by a mixture of σ and the SM Higgs, and reheating of the Universe after inflation proceeds via the Higgs portal. Baryogenesis occurs via thermal leptogenesis. Thus, five fundamental problems of particle physics and cosmology are solved at one stroke in this unified Standard Model - Axion - seesaw - Higgs portal inflation (SMASH) model. It can be probed decisively by upcoming cosmic microwave background and axion dark matter experiments.
Feb 22, 2019 3:00 pm - Rishabh Jain - Axion-Like Particles at Colliders