# Physics at the LHC and beyond

from September 29, 2015 to October 2, 2015
DESY Hamburg
Europe/Berlin timezone
Home > Timetable > Session details > Contribution details

# Contribution

DESY Hamburg - Seminar room 2

# Order $g^2$ susceptibilities in the symmetric phase of the Standard Model

## Speakers

• Mr. Marc SANGEL

## Abstract content

Susceptibilities of conserved charges such as baryon minus lepton number enter baryogenesis computations, since they provide the relationship between conserved charges and chemical potentials. Their next-to-leading order corrections are of order $g$, where $g$ is a generic Standard Model coupling. They are due to soft Higgs boson exchange, and have been calculated recently, together with some order $g ^ 2$ corrections. Here we compute the complete $g ^ 2$ contributions. Close to the electroweak crossover the soft Higgs contribution is of order $g ^ 2$, and is determined by the non-perturbative physics at the magnetic screening scale.