55 citations · 196 across the 18 of their papers we have counts for
18 papers
Measurement of the Electron capture of As into the first excited state of Ge
Hans F. R. Hoffmann, Björn Lehnert, Kai Zuber
The neutrinoless double beta decay of Ge is searched for in the large-scale experiment LEGEND. The measurement of the half-life of this process would give access to the neut…
Energy Calibration and Performance of HPGe Detectors in the LEGEND-200 Experiment
The LEGEND Collaboration, H. Acharya, M. Agostini +259
This paper describes the energy scale procedures and germanium detectors performance in the LEGEND-200 experiment, a critical component for the first unblinding in the search for n…
Measurement of the inhomogeneity of the KATRIN tritium source electric potential by high-resolution spectroscopy of conversion electrons from Kr
H. Acharya, M. Aker, D. Batzler +130
Precision spectroscopy of the electron spectrum of the tritium -decay near the kinematic endpoint is a direct method to determine the effective electron antineutrino mass. The K…
First constraints on general neutrino interactions based on KATRIN data
M. Aker, D. Batzler, A. Beglarian +130
The precision measurement of the tritium -decay spectrum performed by the KATRIN experiment provides a unique way to search for general neutrino interactions (GNI). All theoreti…
Measurement of the electric potential and the magnetic field in the shifted analysing plane of the KATRIN experiment
M. Aker, D. Batzler, A. Beglarian +135
The projected sensitivity of the effective electron neutrino-mass measurement with the KATRIN experiment is below 0.3 eV (90 % CL) after five years of data acquisition. The sensiti…
Search for keV-scale Sterile Neutrinos with first KATRIN Data
M. Aker, D. Batzler, A. Beglarian +128
In this work we present a keV-scale sterile-neutrino search with the first tritium data of the KATRIN experiment, acquired in the commissioning run in 2018. KATRIN performs a spect…
Search for Lorentz-Invariance Violation with the first KATRIN data
M. Aker, D. Batzler, A. Beglarian +130
Some extensions of the Standard Model of Particle Physics allow for Lorentz invariance and Charge-Parity-Time (CPT)-invariance violations. In the neutrino sector strong constraints…
New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs
M. Aker, D. Batzler, A. Beglarian +129
We report on the direct cosmic relic neutrino background search from the first two science runs of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity molecular…
Constraints on partial half-lives of Ce-136 and Ce-138 double electron captures
B. Lehnert, M. Hult, G. Lutter +6
The gamma-ray emissions from a radiopure cerium-bromide crystal with a mass of 4381 g were measured for a total of 497.4 d by means of high-resolution gamma-ray spectrometry in the…
Search for rare alpha and double beta decays of Yb isotopes to excited levels of daughter nuclei
M. Laubenstein, B. Lehnert, S. S. Nagorny +1
A search for alpha and double beta decays of ytterbium isotopes was performed with an ultra-low background high purity germanium detector at Gran Sasso Underground Laboratory (Ital…
First direct detection constraints on Planck-scale mass dark matter with multiple-scatter signatures using the DEAP-3600 detector
P. Adhikari, R. Ajaj, M. Alpízar-Venegas +94
Dark matter particles with Planck-scale mass () arise in well-motivated theories and could be produced by several cosmological mechanisms. Using a blin…
Search for dark matter induced de-excitation of Ta
Björn Lehnert, Harikrishnan Ramani, Mikael Hult +4
Weak-scale dark matter particles, in collisions with nuclei, can mediate transitions between different nuclear energy levels. In particular, owing to sizeable momentum exchange, da…
First operation of the KATRIN experiment with tritium
M. Aker, K. Altenmüller, M. Arenz +168
The determination of the neutrino mass is one of the major challenges in astroparticle physics today. Direct neutrino mass experiments, based solely on the kinematics of beta-decay…
In-situ measurement of the scintillation light attenuation in liquid argon in the GERDA experiment
Nuno Barros, Alexander R. Domula, Björn Lehnert +2
The GERDA experiment searches for the neutrinoless double beta () decay in Ge in order to probe whether the neutrino is a Majorana particle and to shed light on the ne…
DEAP-3600 Recent Dark Matter Results
B. Lehnert
The DEAP-3600 experiment is searching for WIMP dark matter with a 3.3 tonne single phase liquid argon (LAr) target, located at SNOLAB. The construction and filling of DEAP-3600 was…
Backgrounds in the DEAP-3600 Dark Matter Experiment
B. Lehnert
The DEAP-3600 experiment, located at SNOLAB, is searching for dark matter with a single phase liquid argon (LAr) target. For a background-free exposure of 3000 kgyr, the pro…
Search for the decay of nature's rarest isotope Ta
Björn Lehnert, Mikael Hult, Guillaume Lutter +1
Ta is the rarest naturally occurring quasi-stable isotope and the longest lived metastable state which is known. Its possible decay via the or the electron cap…
Background Rejection of n Surface Events in GERDA Phase II
Björn Lehnert
The GERDA experiment searches for neutrinoless double beta () decay in Ge using an array of high purity germanium (HPGe) detectors immersed in liquid argon (LAr). Phas…