Speaker
Bastian Märkisch
(Technische Universität München)
Description
Combining measurements of the lifetime with measurements of (angular) correlation parameters in neutron beta decay, we strive to most precisely determine the matrix element $V_\mathrm{ud}$ of the CKM quark mixing matrix. The goal is to test CKM unitarity on the $10^{-4}$ level.
Alternatively, combining the determination of $V_\mathrm{ud}$ from superallowed nuclear decays and neutron correlation parameters, allows for a rather precise determination of the neutron lifetime.
In this talk, I will present the current status and prospects of correlation measurements (which exhibit their own anomaly), and discuss the connection to the neutron lifetime.
