Observation of a resonance at 4.4 GeV and additional structure near 4.1 GeV in e+e- annihilation

J. Siegrist, 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, J. Jaros, B. Jean-Marie, J. A. Kadyk, R. R. Larsen, D. Lüke, V. Lüth, H. L. Lynch, R. MadarasC. C. Morehouse, H. K. Nguyen, J. M. Paterson, M. L. Perl, I. Peruzzi, F. M. Pierre, M. Piccolo, T. P. Pun, P. Rapidis, B. Richter, B. Sadoulet, R. F. Schwitters, W. Tanenbaum, G. H. Trilling, F. Vannucci, J. S. Whitaker, F. C. Winkelmann, J. E. Wiss

Research output: Contribution to journalArticlepeer-review


We observe a resonancelike structure in the total cross section for hadron production by e+e- colliding beams at a mass of 4414 ± 7 MeV having a total width Γ=33±10 MeV. From the area under this resonance, we deduce the partial width to electron pairs to be Γee=440±140 eV. Further structure of comparable width is present near 4.1 GeV.

Original languageEnglish (US)
Pages (from-to)700-703
Number of pages4
JournalPhysical review letters
Issue number13
StatePublished - 1976
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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