Issues

 / 

2005

 / 

September

  



Neutron lifetime measurements using gravitationally trapped ultracold neutrons

Experiments using gravitationally trapped ultracold neutrons (UCNs) to measure the neutron lifetime are reviewed. The precise value of the neutron lifetime is of fundamental importance to particle physics and cosmology. In our experiment, the UCN storage time is brought closest ever to the neutron lifetime: the probability of the UCN loss from the trap was only 1% of that for neutron β-decay. The neutron lifetime obtained, 878.5 ± 0.7stat ± 0.3sys s, is the most accurate one to date. The impact of the new result on testing the unitarity of the quark mixing matrix and on data analysis for the primordial nucleosynthesis model is scrutinized.

Fulltext is available at IOP
PACS: 06.20.−f, 14.20.Dh, 28.20.−v (all)
DOI: 10.1070/PU2005v048n09ABEH003536
URL: https://ufn.ru/en/articles/2005/9/a/
Citation: Serebrov A P "Neutron lifetime measurements using gravitationally trapped ultracold neutrons" Phys. Usp. 48 867–885 (2005)
BibTexBibNote ® (generic)BibNote ® (RIS)Medline RefWorks
RT Journal
T1 Neutron lifetime measurements using gravitationally trapped ultracold neutrons
A1 Serebrov,A.P.
PB Physics-Uspekhi
PY 2005
FD 10 Sep, 2005
JF Physics-Uspekhi
JO Phys. Usp.
VO 48
IS 9
SP 867-885
DO 10.1070/PU2005v048n09ABEH003536
LK https://ufn.ru/en/articles/2005/9/a/

Оригинал: Серебров А П «Измерение времени жизни нейтрона с использованием гравитационных ловушек ультрахолодных нейтронов» УФН 175 905–924 (2005); DOI: 10.3367/UFNr.0175.200509a.0905

References (63) Cited by (13)

© 1918–2020 Uspekhi Fizicheskikh Nauk
Email: ufn@ufn.ru Editorial office contacts About the journal Terms and conditions