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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2017, Volume 106, Issue 10, Pages 599–606
DOI: https://doi.org/10.7868/S0370274X17220015 (Mi jetpl5418) 		 
This article is cited in 21 scientific papers (total in 21 papers)

FIELDS, PARTICLES, AND NUCLEI

New measurement of the neutron lifetime with a large gravitational trap

A. P. Serebrova, E. A. Kolomenskiya, A. K. Fomina, I. A. Krasnoshñhekovaa, A. V. Vasiljeva, D. M. Prudnikova, I. V. Shokaa, A. V. Chechkina, M. E. Chaikovskiia, V. E. Varlamova, S. N. Ivanova, A. N. Pirozhkova, P. Geltenbortb, O. Zimmerb, T. Jenkeb, M. Van der Grintenc, M. Tuckerc

a Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
b Institut Laue–Langevin, Grenoble Cedex 9, France
c Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
Full-text PDF (1586 kB) Citations (21)
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DOI: https://doi.org/10.7868/S0370274X17220015
Abstract: The lifetime of the neutron is one of the key physical quantities used to determine the weak interaction parameters and to test predictions of the theory of primary nucleosynthesis. The lifetime of the neutron has been measured in the reported experiment by the method of storing neutrons in a material trap with a gravitational valve. Fomblin grease UT-18 hydrogen-free fluorine polymer has been used as coating. The resistance of the coating to repeated cooling down to $80$ K combined with heating up to $300$ K has been studied. The probability of losses in the trap is as small as $1.5\%$ of the neutron decay probability. The lifetime of the neutron $\tau_{\text{n}}=(881.5\pm0.7_{\text{stat}}\pm0.6_{\text{syst}})$s obtained at the new step is in good agreement with a commonly accepted value of $(880.2\pm1.0)$s presented by the Particle Data Group.
Funding agency Grant number
Russian Science Foundation 14-22-00105
Received: 03.10.2017
Revised: 13.10.2017
English version:
Journal of Experimental and Theoretical Physics Letters, 2017, Volume 106, Issue 10, Pages 623–629
DOI: https://doi.org/10.1134/S0021364017220143
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. P. Serebrov, E. A. Kolomenskiy, A. K. Fomin, I. A. Krasnoshñhekova, A. V. Vasiljev, D. M. Prudnikov, I. V. Shoka, A. V. Chechkin, M. E. Chaikovskii, V. E. Varlamov, S. N. Ivanov, A. N. Pirozhkov, P. Geltenbort, O. Zimmer, T. Jenke, M. Van der Grinten, M. Tucker, “New measurement of the neutron lifetime with a large gravitational trap”, Pis'ma v Zh. Èksper. Teoret. Fiz., 106:10 (2017), 599–606; JETP Letters, 106:10 (2017), 623–629
Citation in format AMSBIB
\Bibitem{SerKolFom17}
\by A.~P.~Serebrov, E.~A.~Kolomenskiy, A.~K.~Fomin, I.~A.~Krasnoshñhekova, A.~V.~Vasiljev, D.~M.~Prudnikov, I.~V.~Shoka, A.~V.~Chechkin, M.~E.~Chaikovskii, V.~E.~Varlamov, S.~N.~Ivanov, A.~N.~Pirozhkov, P.~Geltenbort, O.~Zimmer, T.~Jenke, M.~Van der Grinten, M.~Tucker
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    • This publication is cited in the following 21 articles:
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    		Ïèñüìà â Æóðíàë ýêñïåðèìåíòàëüíîé è òåîðåòè÷åñêîé ôèçèêè Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki
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