Observation in e+e- annihilation of a narrow state at 1865 MeV/c2 decaying to Kπ and Kπππ

G. Goldhaber, F. M. Pierre, G. S. Abrams, M. S. Alam, A. M. Boyarski, M. Breidenbach, W. C. Carithers, W. Chinowsky, S. C. Cooper, R. G. Devoe, J. M. Dorfan, G. J. Feldman, C. E. Friedberg, D. Fryberger, G. Hanson, J. Jaros, A. D. Johnson, J. A. Kadyk, R. R. Larsen, D. LükeV. Lüth, H. L. Lynch, R. J. Madaras, C. C. Morehouse, H. K. Nguyen, J. M. Paterson, M. L. Perl, I. Peruzzi, M. Piccolo, T. P. Pun, P. Rapidis, B. Richter, B. Sadoulet, R. H. Schindler, R. F. Schwitters, J. Siegrist, W. Tanenbaum, G. H. Trilling, F. Vannucci, J. S. Whitaker, J. E. Wiss

Research output: Contribution to journalArticlepeer-review


We present evidence, from a study of multihadronic final states produced in e+e- annihilation at center-of-mass energies between 3.90 and 4.60 GeV, for the production of a new neutral state with mass 1865±15 MeV/c2 and decay width less than 40 MeV/c2 that decays to K±π and K±ππ±π. The recoil-mass spectrum for this state suggests that it is produced only in association with systems of comparable or larger mass.

Original languageEnglish (US)
Pages (from-to)255-259
Number of pages5
JournalPhysical review letters
Issue number5
StatePublished - 1976

ASJC Scopus subject areas

  • General Physics and Astronomy


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