Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Fundamental Symmetries

HK 26.5: Talk

Tuesday, March 15, 2016, 17:45–18:00, S1/01 A02

Status of the PERC experiment on neutron beta decay — •Bastian Märkisch for the PERC collaboration — Physik-Department, Technische Universität München

Neutron beta decay is an excellent system to study the charged weak interaction experimentally. The decay is precisely described by theory and unencumbered by nuclear structure effects. Observables are numerous correlation coefficients, spectra and the neutron lifetime. Most importantly, precision measurements in neutron beta decay are used to investigate the structure of the weak interaction and to derive the CKM matrix element Vud.

In this talk we will present the status of the new instrument PERC (Proton Electron Radiation Channel), which is currently under construction at the FRM II, Garching, by an international collaboration. PERC is designed to improve measurements of several correlation coefficients in neutron decay by an order of magnitude.