# Physics of fundamental Symmetries and Interactions - PSI2019

Oct 20 – 25, 2019
PSI
Europe/Zurich timezone

## Experiment on measuring the ratio of the axial and vector constants of weak interaction

Oct 22, 2019, 5:32 PM
1m
WHGA/001 - Auditorium (PSI)

Poster

### Speaker

Alexey Fomin (Petersburg Nuclear Physics Institute)

### Description

The possibility of experimentally determining the ratio λ of the axial weak-interaction constant G$_A$ to the vector weak-interaction constant G$_V$ by simultaneously measuring the electron and neutrino asymmetries at the same setup is discussed. The proposed measurement and data-processing procedures are described. The determination of λ by the method in question permits disregarding the possible contribution of the Fierz interference term and dispensing with an accurate measurement of the neutron polarization.

### Primary authors

Anatolii Serebrov (Petersburg Nuclear Physics Institute) Alexey Fomin (Petersburg Nuclear Physics Institute)