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High Precision Experiments with Cold and Ultra-Cold Neutrons
Hartmut Abele, Tobias Jenke, Erwin Jericha +5
This work presents selected results from the first round of the DFG Priority Programme SPP 1491 "precision experiments in particle and astroparticle physics with cold and ultra-col…
Spectroscopy with cold and ultra-cold neutrons
Hartmut Abele, Tobias Jenke, Gertrud Konrad
We present two new types of spectroscopy methods for cold and ultra-cold neutrons. The first method, which uses the \RB drift effect to disperse charged particles in a uniformly cu…
Measurement of the Axial-Vector Coupling Constant in Neutron Beta Decay
Bastian Maerkisch, Hartmut Abele
The matrix element \Vud of the CKM matrix can be determined by two independent measurements in neutron decay: the neutron lifetime and the ratio of coupling constants $λ=g_A/…
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…