Speaker
Description
Atomic
spectroscopy is a prominent tool for probing new physics as well as testing the
standard model of particle physics. A key factor in atomic systems is the average
distance between the nucleus and the orbiting particle, which greatly determines
the sensitivity to the range of interactions. We study a class of atomic systems that,
on the one hand, have small Bohr radii, thus increasing the sensitivity to
short-range interactions mediated by heavy new bosons and, on the other hand,
their angular momentum is maximal which considerably reduces the effect of
contact terms such as those arising from the strong nuclear force and finite-size
corrections. We discuss overlooked effects of standard model finite-size
corrections focusing on the nuclear polarizability effect, and how to bypass it in a
new physics search. Finally, we set new terrestrial bounds on several benchmark
models.
