A New World Average Value for the Neutron Lifetime

Details A New World Average Value for the Neutron Lifetime A New World Average Value for the Neutron Lifetime

2010-05-24

arxiv.org/abs/1005.4312v2

Physics

Nuclear Physics

Nuclear Experiment

27 pages, 13 figures; Fig.13 updated

Scientific paper

The analysis of the data on measurements of the neutron lifetime is presented. A new most accurate result of the measurement of neutron lifetime [Phys. Lett. B 605 (2005) 72] 878.5 +/- 0.8 s differs from the world average value [Phys. Lett. B 667 (2008) 1] 885.7 +/- 0.8 s by 6.5 standard deviations. In this connection the analysis and Monte Carlo simulation of experiments [Phys. Lett. B 483 (2000) 15] and [Phys. Rev. Lett. 63 (1989) 593] is carried out. Systematic errors of about -6 s are found in each of the experiments. The summary table for the neutron lifetime measurements after corrections and additions is given. A new world average value for the neutron lifetime 879.9 +/- 0.9 s is presented.

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