Measurement of the Neutron Lifetime Using Gravitational Trap and a Low-Temperature Fomblin Coating.

Autor: Serebrov, A., Varlamov, V., Kharitonov, A., Fomin, A., Pokotilovski, Yu., Geltenbort, P., Butterworth, J., Krasnoschekova, I., Lasakov, M., Tal'daev, R., Vassiljev, A., Zherebtsov, O.
Předmět:
Zdroj: Journal of Research of the National Institute of Standards & Technology; Jul/Aug2005, Vol. 110 Issue 4, p333-338, 6p, 1 Diagram, 4 Graphs
Abstrakt: We present a new value for the neutron lifetime of 878.5 ± 0.7stat. ± 0.3 syst. This result differs from the world average value 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 β -asymmetry in neutron decay, A0 of -0.1189(7) is in a good agreement with the Standard Model. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index