141 citations · 315 across the 10 of their papers we have counts for
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V_{ud} from neutron beta decay
Oliver Zimmer
The experimental determination of V_{ud} from neutron beta decay requires accurate values of the neutron lifetime and the ratio of the weak axial-vector to vector coupling constant…
Progress Towards A Permanent Octupole Magnetic Ultra-Cold Neutron Trap for Lifetime Measurements
Kent Leung, Oliver Zimmer
The current knowledge of the neutron -decay lifetime has come under scrutiny as of late due to large disagreements between recent precise measurements. Measurements using magnet…
Accumulation and extraction of ultracold neutrons from a superfluid helium converter coated with fluorinated grease
O. Zimmer, P. Schmidt-Wellenburg, M. Assmann +5
We report experiments on the production of ultracold neutrons (UCN) in a converter of superfluid helium coated with fluorinated grease. We employed our technique of window-free ext…
Measurement of the parity-violating triton emission asymmetry in the reaction 6Li(n,alfa)3H with polarised cold neutrons
V. A. Vesna, Yu. M. Gledenov, V. V. Nesvizhevsky +5
We describe measurements of the parity-violating (P-odd) triton emission asymmetry coefficient in the 6Li(n,alfa)3H reaction with polarised cold neutrons. Experiments were carried…
A source of ultra-cold neutrons for the gravitational spectrometer GRANIT
P. Schmidt-Wellenburg, P. Geltenbort, V. V. Nesvizhevsky +4
We present the status of the development of a dedicated high density ultra-cold neutron (UCN) source dedicated to the gravitational spectrometer GRANIT. The source employs superthe…
Experimental search for neutron - mirror neutron oscillations using storage of ultracold neutrons
A. P. Serebrov, E. B. Aleksandrov, N. A. Dovator +12
The idea of a hidden sector of mirror partners of elementary particles has attracted considerable interest as a possible candidate for dark matter. Recently it was pointed out by B…