Speaker
ANDRÉ DE GOUVÊA
Description
I revisit the issue of naturalness, discussing some of the implicit
assumptions that underly most of the discussions on this topic. I
discuss a more pragmatic definition of the hierarchy problem that does
not rely on peeking beyond the murky boundaries of quantum field
theory and investigate the fine-tuning of the electroweak scale
associated with thresholds from heavy particles, which are both
calculable and dependent on the nature of the would-be ultraviolet
completion of the Standard Model. More concretely, I discuss different
manifestations of new high-energy scales that are favored by
experimental hints for new physics with an eye toward making use of
fine-tuning in order to determine natural regions of the new physics
parameter space.
