Advertisement

JETP Letters

, Volume 106, Issue 10, pp 623–629 | Cite as

New measurement of the neutron lifetime with a large gravitational trap

  • A. P. Serebrov
  • E. A. Kolomenskiy
  • A. K. Fomin
  • I. A. Krasnoschekova
  • A. V. Vassiljev
  • 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
Fields, Particles, and Nuclei

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 τn = (881.5 ± 0.7stat ± 0.6syst)s obtained at the new step is in good agreement with a commonly accepted value of (880.2 ± 1.0) s presented by the Particle Data Group.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    G. Steigman, Astrophys. J. 57, 463 (2007).Google Scholar
  2. 2.
    A. P. Serebrov, A. K. Fomin, A. G. Kharitonov, V. E. Varlamov, E. A. Kolomenskiy, I. A. Krasnoshchekova, and A. V. Chechkin, Crystallogr. Rep. 61, 152 (2016).Google Scholar
  3. 3.
    A. P. Serebrov, V. E. Varlamov, A. G. Kharitonov, A. K. Fomin, Yu. N. Pokotilovski, P. Geltenbort, I. A. Krasnoschekova, M. S. Lasakov, R. R. Tal’daev, A. V. Vassiljev, and O. M. Zherebtsov, Phys. Lett. B 605, 72 (2005).ADSCrossRefGoogle Scholar
  4. 4.
    A. P. Serebrov, V. E. Varlamov, A. G. Kharitonov, A. K. Fomin, Y. N. Pokotilovski, P. Geltenbort, I. A. Krasnoschekova, M. S. Lasakov, R. R. Taldaev, A. V. Vassiljev, and O. M. Zherebtsov, Phys. Rev. C 78, 035505 (2008).ADSCrossRefGoogle Scholar
  5. 5.
    A. P. Serebrov, J. Butterworth, M. Daum, A. K. Fomin, P. Geltenbort, K. Kirch, I. A. Krasnoschekova, M. S. Lasakov, Yu. P. Rudnev, V. E. Varlamov, and A. V. Vassiljev, Phys. Lett. A 309, 218 (2003).ADSCrossRefGoogle Scholar
  6. 6.
    V. A. Andreev, A. V. Vasiljev, E. A. Ivanov, D. Ilyin, A. Krivshich, and A. Serebrov, Nucl. Instrum. Methods Phys. Res. A 845, 548 (2017).ADSCrossRefGoogle Scholar
  7. 7.
    R. W. Pattie, Jr., N. B. Callahan, C. Cude-Woods, et al., arXiv:1707.01817 (2017).Google Scholar
  8. 8.
    S. Arzumanov, L. Bondarenko, S. Chernyavsky, P. Geltenbort, V. Morozov, V. V. Nesvizhevsky, Yu. Panin, and A. Strepetov, Phys. Lett. B 745, 79 (2015).ADSCrossRefGoogle Scholar
  9. 9.
    V. F. Ezhov, arxiv:1412.7434 (2014).Google Scholar
  10. 10.
    A. T. Yue, M. S. Dewey, D. M. Gilliam, G. L. Greene, A. B. Laptev, J. S. Nico, W. M. Snow, and F. E. Wietfeldt, Phys. Rev. Lett. 111, 222501 (2013).ADSCrossRefGoogle Scholar
  11. 11.
    A. Steyerl, J. M. Pendlebury, C. Kaufman, S. S. Malik, and A. M. Desai, Phys. Rev. C 85, 065503 (2012).ADSCrossRefGoogle Scholar
  12. 12.
    A. Pichlmaier, V. Varlamov, K. Schreckenbach, and P. Geltenbort, Phys. Lett. B 693, 221 (2010).ADSCrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • A. P. Serebrov
    • 1
  • E. A. Kolomenskiy
    • 1
  • A. K. Fomin
    • 1
  • I. A. Krasnoschekova
    • 1
  • A. V. Vassiljev
    • 1
  • D. M. Prudnikov
    • 1
  • I. V. Shoka
    • 1
  • A. V. Chechkin
    • 1
  • M. E. Chaikovskii
    • 1
  • V. E. Varlamov
    • 1
  • S. N. Ivanov
    • 1
  • A. N. Pirozhkov
    • 1
  • P. Geltenbort
    • 2
  • O. Zimmer
    • 2
  • T. Jenke
    • 2
  • M. Van der Grinten
    • 3
  • M. Tucker
    • 3
  1. 1.Petersburg Nuclear Physics InstituteNational Research Center Kurchatov InstituteGatchinaRussia
  2. 2.Institut Laue–LangevinGrenoble Cedex 9France
  3. 3.Science and Technology Facilities CouncilRutherford Appleton Laboratory, Harwell CampusDidcot, OxfordshireUK

Personalised recommendations