2008/08/28 by A. P. Serebrov, A. П. Серебров, Serebrov, A. P. +3 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Quantum, superfluid, helium dynamics #nucl-ex
paper · pdf · doi:10.48550/arxiv.0808.3975
12 pages, more detailed analysis
openalex publication_date 2008/08/28 · arxiv created 2009/04/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We are discussing the present situation with neutron lifetime measurements. There is a serious discrepancy between the previous experiments and the recent precise experiment [1]. The possible reason of the discrepancy can be connected with a quasi-elastic scattering of UCN on the surface of liquid fomblin which was used for most of the previous experiments. The Monte Carlo simulation of one of the previous experiments [2] shows that the result of this experiment [2] has to be corrected and instead of the previous result 887.6 +/- 3 s the new result 880.4 +/- 3 s has to be claimed. [1] A.P. Serebrov et al., Phys. Lett. B 605 (2005) 72. [2] W. Mampe et al., Phys. Rev. Lett. 63 (1989) 593.