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

Preprint

2 September 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-ex/0408009

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 (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.

Keywords

TEMPERATURE FOMBLIN
GRAVITATIONAL TRAP
NEUTRON LIFETIME
STANDARD MODEL
LIFETIME USING
NEW VALUE
ASYMMETRY

All Related Versions

Version 1, 2004-08-09, ArXiv
Version 2, 2004-09-02, ArXiv
Published version: Physics Letters B, 605 (1-2), 72.

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