Study of three-prong decays and determination of the A1 parameters

W. Ruckstuhl, R. Stroynowski, W. B. Atwood, B. C. Barish, G. R. Bonneaud, A. Courau, G. J. Donaldson, R. Dubois, M. M. Duro, E. E. Elsen, S. G. Gao, Y. Z. Huang, G. M. Irwin, R. P. Johnson, H. Kichimi, J. Kirkby, D. E. Klem, D. E. Koop, J. Ludwig, G. B. MillsA. Ogawa, T. Pal, R. Pitthan, D. L. Pollard, C. Y. Prescott, L. S. Rochester, M. Sakuda, S. S. Sherman, S. Q. Wang, S. G. Wojcicki, H. Yamamoto, W. G. Yan, C. C. Young

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


We report the results of a study of the three-prong decay mode of the in data taken with the DELCO detector at the SLAC e+e- storage ring PEP. We determine the total three-prong branching ratio to be B(3)=( and the exclusive branching ratios B(+-)=(5.00.1)% and B(+-0)=(6.01.2)%, respectively. The data with three charged pions allow for the determination of the mass and width of the A1 resonance as MA1=10562015 MeV and A1=476-120+13254 MeV.

Original languageEnglish
Pages (from-to)2132-2135
Number of pages4
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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