Abstract
The empirical data on triton β- decay, 3H→3He+e−+v˜e have been analysed with regard to their implications for neutron β decay, n→p+e−+v˜e. The latter process is a primary source of information on weak interactions in the nucleonic sector1; it also has a central role in big-bang cosmology2,3 and in nuclear astrophysics in relation to the solar neutrino problem4. Unfortunately, the absolute rate of neutron β decay is rather uncertain5. The Particle Data Group has recommended the value τn = 925±11 s for the neutron lifetime6, based on two direct measurements7,8 which are in close accord, but barely consistent with the value τn = 905±11 s derived from directional correlation data on polarized and unpolarized neutron decay9–11, and the comparative half lives of pure Fermi mirror transitions12,13. A third direct measurement has given the value τn = 877±11 s (ref. 14), which is totally at variance with all other evidence. We suggest here that the triton data exclude values of τn outside the range 911±10s, and deduce a weighted mean value τn = 914±6 s.
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References
Byrne, J. Rep. Prog. phys. 45, 115–184 (1982).
Tayler, R. J. Nature 282, 559–560 (1979).
Tayler, R. J. Q. Jl R. astr. Soc. 24, 1–9 (1983).
Bahcall, J. H., Huebner, W. F., Lubow, S. H., Parker, P. D. & Ulrich, R. K. Rev. mod. Phys. 54, 767–799 (1982).
Wilkinson, D. H. Nucl. Phys. A377, 474–507 (1982).
Particle Data Group Phys. Lett. B111, 91–92 (1982).
Christensen, C. J., Nielsen, A., Bahnsen, A., Brown, W. K. & Rustad, B. M. Phys. Rev. D5, 1628–1639 (1972).
Byrne, J., Morse, J., Smith, K. F., Shaikh, F., Green, K. & Greene, G. L. Phys. Lett. B92, 274–278 (1980).
Krohn, V. E. & Ringo, G. R. Phys. Lett. B55, 175–177 (1975).
Erozolimskii, B. G., Frank, A. L., Mostovoi Yu., A., Arzumanov, S. S. & Voitzik, L. R. Soviet J. nucl. Phys. 30, 356–361 (1979).
Stratowa, C., Dobrozemsky, R. & Weinzierl, P. Phys. Rev. D18, 3970–3979 (1978).
Wilkinson, D. H. & Alburgher, D. E. Phys. Rev. C13, 2517–2523 (1976).
Towner, I., Hardy, J. & Harvey, M. Nucl. Phys. A284, 269–281 (1977).
Bondarenko, L. N., Kurguzov, V. V., Prokofiev, Yu. A., Rogov, E. Y. & Spivak, P. R. JETP Lett. 28, 303–307 (1978).
Arnison, G. et al. Phys. Lett. B122, 103–116 (1983); B126, 318–410 (1983).
Cabibbo, N. Phys. Rev. Lett. 10, 531–533 (1963).
Glashow, S. L., Iliopoulos, J. & Miani, L. Phys. Rev. D2, 1285–1292 (1970).
O'Connell, F. R. & Matese, J. J. Nature 222, 649–650 (1969).
Bergkvist, K. E. Nucl. Phys. B39, 317–408 (1972).
Lyubimov, V. A., Novikov, E. G., Nozik, V. Z., Tret'yakov, E. G. & Kosik, V. S. Phys. Lett. B94, 266–268 (1980).
Duclose, J., Magnon, A. & Picard, J. Phys. Lett. B47, 491–493 (1973).
Roos, M. Nucl. Phys. B77, 420–428 (1974).
Jones, W. M. Phys. Rev. 100, 124–125 (1955).
Jordan, K. C., Blanke, B. C. & Dudley, W. A. J. inorg. nucl. Chem. 29, 2129–2131 (1967).
Wilkinson, D. H. & Macefield, B. E. F. Nucl. Phys. A232, 58–92 (1974).
Simpson, J. J. Phys. Rev. D23, 649–662 (1981).
Smith, L. G., Koets, E. & Wapstra, A. H., Phys. Lett. B102, 114–115 (1981).
Bashkin, S. & Stoner, J. R. Atomic Energy Level and Grotrian Diagrams Vol. 1 (North-Holland, Amsterdam, 1975).
Williams, R. D. & Koonin, S. E. Phys. Rev. C27, 1815–1817 (1983).
Bahcall, J. H. Phys. Rev. 124, 495–499 (1961).
Wilkinson, D. H. Nuclear Physics with Heavy Ions and Mesons (eds Balian, R., Rho, M. & Ripka, G.) (North-Holland, Amsterdam, 1978).
Rho, M. Nucl. Phys. A231, 443–503 (1974).
Barroso, A. & Blin-Stoyle, R. J. Nucl. Phys. A251, 446–456 (1975).
Blin-Stoyle, R. J. Nucl. Phys. A257, 353–369 (1975).
Khanna, F. C., Towner, I. S. & Lee, H. C. Nucl. Phys. A305, 349–356 (1978).
Towner, I. S & Khanna, F. C. Phys. Rev. Lett. 42, 51–54 (1979).
Bell, J. S. & Blin-Stoyle, R. J. Nucl. Phys. 6, 87–99 (1958).
Oset, E. & Rho, M. Phys. Rev. Lett. 42, 47–50 (1979).
Pagels, H. Phys. Rep. 16, 219–311 (1975).
Tegen, R., Schedl, M. & Weise, W. Phys. Lett. B125, 9–13 (1983).
Koniuk, R. & Tarrach, R. Z. Phys. C18, 179–187 (1983).
Guichon, P. A. M., Miller, G. A. & Thomas, A. W. Phys. Lett. B124, 109–112 (1983).
Dominguez, C. A. Phys. Rev. D25, 1937–1943 (1982).
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Byrne, J. Constraints on the neutron lifetime from triton β decay. Nature 310, 212–213 (1984). https://doi.org/10.1038/310212a0
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DOI: https://doi.org/10.1038/310212a0
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