Observation of the radiative transition ψ → γE(1420)

Autor: G. H. Trilling, J. A. Kadyk, A. J. Lankford, J. Dorenbosch, G. J. Feldman, M. L. Perl, Walter R. Innes, A. Roussarie, M. S. Alam, H. Taureg, J. L. Siegrist, M. W. Coles, Martin Breidenbach, J. Dorfan, G. Hanson, H. Zaccone, V. Luth, R. A. Vidal, A. M. Boyarski, C. Y. Pang, J. M. Weiss, A. Blondel, J. Strait, W. E. Dieterle, W. C. Carithers, C. A. Blocker, Rafe Schindler, R. R. Larsen, T. Himel, Mark E. Nelson, E. Vella, Roy F Schwitters, M. Tonutti, A. D. Johnson, G. Gidal, S. Cooper, Burton Richter, J. A. Jaros, G. S. Abrams, J. B. Dillon, M. E. B. Franklin, D. L. Scharre, D. G. Hitlin, K. G. Hayes, G. Goldhaber, D. L. Burke, P. Jenni, M. W. Eaton, I. Videau, R. J. Hollebeek, W. Chinowsky, J. F. Patrick, R. E. Millikan
Rok vydání: 1980
Předmět:
Zdroj: Physics Letters B. 97:329-332
ISSN: 0370-2693
Popis: We have observed a radiative transition from the ψ to a state decaying into K S K ± π ∓ , with mass M = 1.44 −0.015 +0.01 GeV/ c 2 and width Γ = 0.05 −0.02 +0.03 GeV/ c 2 . We tentatively identify this state as the E(1420). Assuming that this state is an isospin singlet, we have determined the branching fraction product B(ψ → γ E ) × B( E × K K π) = (3.6 ± 1.4) × 10 −3 .
Databáze: OpenAIRE