206 citations · 552 across the 10 of their papers we have counts for
9 papers
Limit on the Fierz Interference Term b from a Measurement of the Beta Asymmetry in Neutron Decay
Heiko Saul, Christoph Roick, Hartmut Abele +7
In the standard model of particle physics, the weak interaction is described by vector and axial-vector couplings only. Non-zero scalar or tensor interactions would imply an additi…
Towards a first measurement of the free neutron bound beta decay detecting hydrogen atoms at a throughgoing beamtube in a high flux reactor
Wolfgang Schott, Erwin Gutsmiedl, Karina Bernert +9
In addition to the common 3-body decay of the neutron there should exist an effective 2-body subset with the electron and proton forming a Hydrog…
Design of the Magnet System of the Neutron Decay Facility PERC
Xiangzun Wang, Carmen Ziener, Hartmut Abele +27
The PERC (Proton and Electron Radiation Channel) facility is currently under construction at the research reactor FRM II, Garching. It will serve as an intense and clean source of…
Undetected Electron Backscattering in PERKEO III
Christoph Roick, Heiko Saul, Hartmut Abele +1
The beta asymmetry in neutron beta decay is used to determine the ratio of axial-vector coupling to vector coupling most precisely. In electron spectroscopy, backscattering of elec…
Constraints on the Dark Matter Interpretation of the Neutron Decay Anomaly with the PERKEO II experiment
M. Klopf, E. Jericha, B. Märkisch +3
Discrepancies from in-beam and in-bottle type experiments measuring the neutron lifetime are on the 4 standard deviation level. In a recent publication Fornal and Grinstein prop…
Exotic decay channels are not the cause of the neutron lifetime anomaly
D. Dubbers, H. Saul, B. Märkisch +2
Since long neutron lifetimes measured with a beam of cold neutrons are significantly different from lifetimes measured with ultracold neutrons bottled in a trap. It is often specul…
Measurement of the Weak Axial-Vector Coupling Constant in the Decay of Free Neutrons Using a Pulsed Cold Neutron Beam
Bastian Märkisch, Holger Mest, Heiko Saul +8
We present a precision measurement of the axial-vector coupling constant in the decay of polarized free neutrons. For the first time, a pulsed cold neutron beam was used for…
Gravity Resonance Spectroscopy Constrains Dark Energy and Dark Matter Scenarios
T. Jenke, G. Cronenberg, J. Burgdörfer +9
We report on precision resonance spectroscopy measurements of quantum states of ultracold neutrons confined above the surface of a horizontal mirror by the gravity potential of the…
A quantized frequency reference in the short-ranged gravity potential and its application for dark matter and dark energy searches
T. Jenke, G. Cronenberg, P. Geltenbort +6
The evidence for the observation of the Higgs spin-0-boson as a manifestation of a scalar field provides the missing corner stone for the standard model of particles (SM). However,…