Measurement of the branching of (2S)→π+π-+(1S)

J. J. Mueller, D. Potter, F. Sannes, P. Skubic, R. Stone, A. Brody, A. Chen, M. Goldberg, N. Horwitz, J. Kandaswamy, H. Kooy, P. Lariccia, G. C. Moneti, D. L. Bridges, M. S. Alam, S. E. Csorna, R. Hicks, R. S. Panvini, J. S. Poucher, D. AndrewsP. Avery, K. Berkelman, P. Cabenda, D. G. Cassel, J. W. DeWire, R. Ehrlich, T. Ferguson, T. Gentile, M. G.D. Gilchriese, B. Gittelman, D. L. Hartill, D. Herrup, M. Herzlinger, D. L. Kreinick, N. B. Mistry, E. Nordberg, R. Perchonok, R. Plunkett, K. A. Shinsky, R. H. Siemann, A. Silverman, P. C. Stein, S. Stone, R. Talman, H. G. Thonemann, D. Weber, R. Wilcke, A. J. Sadoff, C. Bebek, J. Haggerty

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26 Scopus citations

Abstract

We have observed the decay of the (2S) into the (1S), obtaining a branching ratio of 19.1±3.1±2.9% for the mode (2S)→π+π-+(1S). The di-pion mass spectrum peaks at large invariant mass, and the angular distribution of the di-pion system is consistent with s-wave production.

Original languageEnglish (US)
Pages (from-to)1181-1184
Number of pages4
JournalPhysical review letters
Volume46
Issue number18
DOIs
StatePublished - 1981

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