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

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  • 9 August 2004
Abstract
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 by 6 standard deviations and by 4 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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