Hidden Naturalness in Cosmology and at Colliders

by Dr Matthew Low (University of Pittsburgh)

Tuesday Mar 25, 2025, 3:30 PM → 4:30 PM Pacific/Honolulu

Room 420 (Watanabe Hall)

One of the enduring mysteries in particle physics is the lightness of the Higgs mass which is known as the electroweak hierarchy problem. Traditionally, colliders have been the leading tool to search for theories that solve this problem. In recent years, however, data from the Large Hadron Collider has tightened the parameter space of these theories. This has motivated the exploration of theories of hidden naturalness, or neutral naturalness, where the most common collider signatures are absent. Such theories may still have some, less conventional, collider signatures, but more often face the strongest constraints from cosmological observations.  I will present the signatures of two such theories, twin Higgs and N-naturalness, which are primarily cosmological.  I will also present a new application of collider physics that highlights quantum correlations between particles.

video - Dr. M. Low