Monte Carlo simulation of the experiment MAMBO I and possible correction of neutron lifetime result

Details Monte Carlo simulation of the experiment MAMBO I and possible correction of neutron lifetime result Monte Carlo simulation of the experiment MAMBO I and possible correction of neutron lifetime result

2008-08-28

arxiv.org/abs/0808.3975v2

Physics

Nuclear Physics

Nuclear Experiment

12 pages, more detailed analysis

Scientific paper

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.

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