This review demonstrates the unique role of the neutrino by discussing in detail the physics
of and with neutrinos. We deal with neutrino sources, neutrino oscillations, absolute masses …

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 …

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 …

This paper reports on the improved Mainz experiment on tritium β spectroscopy which yields
a 10 times higher signal to background ratio than before. The main experimental effects and …

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 …

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 …