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Measurement of the neutron lifetime using a gravitational trap and a low-temperature Fomblin coatingSerebrov, A.; Varlamov, V.; Kharitonov, A.; Fomin, A.; Pokotilovski, Yu; Geltenbort, P.; Butterworth, J.; Krasnoschekova, I.; Lasakov, M.; Tal'daev, R.; Vassiljev, A.; Zherebtsov, O.
Physics letters. B, 01/2005, Letnik: 605, Številka: 1-2Journal Article
We present a new value for the neutron lifetime of 878.5±0.7stat±0.3syst. 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 Phys. Lett. B 483 (2000) 15. However, this new value for the neutron lifetime together with a β-asymmetry in neutron decay, A0, of −0.1189(7) Phys. Rev. Lett. 88 (2002) 211801 is in a good agreement with the Standard Model.
