The turn of the 21st century witnessed a sudden shift in our fundamental understanding of
particle physics. While the minimal Standard Model predicts that neutrino masses are …

Abstract The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-
precision integral spectrum of the endpoint region of T 2 β decay, with the primary goal of …

Since the discovery of neutrino oscillations, we know that neutrinos have non-zero mass.
However, the absolute neutrino-mass scale remains unknown. Here we report the upper …

We report on the neutrino mass measurement result from the first four-week science run of
the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons …

We report the results of the second measurement campaign of the Karlsruhe Tritium
Neutrino (KATRIN) experiment. KATRIN probes the effective electron anti-neutrino mass …

The discovery of extrasolar planets is one of the major scientific advances of the last two
decades. Hundreds of planets have now been detected and astronomers are beginning to …

In this contribution, we review the status and perspectives of direct neutrino mass
experiments, which investigate the kinematics of β‐decays of specific isotopes (3H, 187Re …

We present the results of the light sterile neutrino search from the second Karlsruhe Tritium
Neutrino (KATRIN) measurement campaign in 2019. Approaching nominal activity, 3.76× 10 …

This paper reviews recent experiments on tritium β-spectroscopy searching for the absolute
value of the electron neutrino mass m (ν e). By the use of dedicated electrostatic filters with …

A fully analytical description of the allowed β spectrum shape is given in view of ongoing
and planned measurements. Its study forms an invaluable tool in the search for physics …