Measurement of the neutron lifetime using a gravitational trap and a low-temperature Fomblin coating

Details Measurement of the neutron lifetime using a gravitational trap and a low-temperature Fomblin coating Measurement of the neutron lifetime using a gravitational trap and a low-temperature Fomblin coating

2004-08-09

arxiv.org/abs/nucl-ex/0408009v2

Phys.Lett.B605:72-78,2005

Physics

Nuclear Physics

Nuclear Experiment

11 pages, 9 figures; extended content with some corrections

Scientific paper

10.1016/j.physletb.2004.11.013

We present a new value for the neutron lifetime of 878.5 +- 0.7 stat. +- 0.3 syst. This result differs from the world average value (885.7 +- 0.8 s) by 6.5 standard deviations and by 5.6 standard deviations from the previous most precise result. However, this new value for the neutron lifetime together with a beta-asymmetry in neutron decay, Ao, of -0.1189(7) is in a good agreement with the Standard Model.

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