Observation of an intermediate state in ψ(3684) radiative cascade decay

W. Tanenbaum, J. S. Whitaker, G. S. Abrams, A. M. Boyarski, M. Breidenbach, F. Bulos, W. Chinowsky, G. J. Feldman, C. E. Friedberg, D. Fryberger, G. Goldhaber, G. Hanson, D. L. Hartill, B. Jean-Marie, J. A. Kadyk, R. R. Larsen, A. M. Litke, D. Lüke, B. A. Lulu, V. LüthH. L. Lynch, C. C. Morehouse, J. M. Paterson, M. L. Perl, F. M. Pierre, T. P. Pun, P. Rapidis, B. Richter, B. Sadoulet, R. F. Schwitters, G. H. Trilling, F. Vannucci, F. C. Winkelmann, J. E. Wiss

Research output: Contribution to journalArticlepeer-review


We present evidence for the existence of an intermediate state observed in the decay sequence ψ(3684)→ψ(3095)γγ. The mass of the state is either 3500 ± 10 or 3270 ± 10 MeV. The branching fraction of the sequence is (3.6 ± 0.7)%.

Original languageEnglish (US)
Pages (from-to)1323-1326
Number of pages4
JournalPhysical review letters
Issue number20
StatePublished - 1975
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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