# Physics at the LHC and beyond

29 September 2015 to 2 October 2015
DESY Hamburg
Europe/Berlin timezone

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

1 Oct 2015, 15:00
15m
Seminar room 2 (DESY Hamburg)

### Speaker

Mr Marc Sangel (Universität Bielefeld)

### Description

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.

### Primary authors

Prof. Dietrich BÖdeker (Universität Bielefeld) Mr Marc Sangel (Universität Bielefeld)

### Presentation Materials

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