Experimental limit on the decay K-K0

H. Aihara, M. Alston-Garnjost, R. E. Avery, A. Barbaro-Galtieri, A. R. Barker, A. V. Barnes, B. A. Barnett, D. A. Bauer, H. U. Bengtsson, D. L. Bintinger, G. J. Bobbink, T. S. Bolognese, A. D. Bross, C. D. Buchanan, A. Buijs, D. O. Caldwell, A. R. Clark, G. D. Cowan, D. A. Crane, O. I. DahlK. A. Derby, J. J. Eastman, P. H. Eberhard, T. K. Edberg, A. M. Eisner, R. Enomoto, F. C. Erné, T. Fujii, J. W. Gary, W. Gorn, J. M. Hauptman, W. Hofmann, J. E. Huth, J. Hylen, T. Kamae, H. S. Kaye, K. H. Kees, R. W. Kenney, L. T. Kerth, Winston Ko, R. I. Koda, R. R. Kofler, K. K. Kwong, R. L. Lander, W. G.J. Langeveld, J. G. Layter, F. L. Linde, C. S. Lindsey, S. C. Loken, A. Lu, X. Q. Lu, G. R. Lynch, R. J. Madaras, K. Maeshima, B. D. Magnuson, J. N. Marx, G. E. Masek, L. G. Mathis, J. A.J. Matthews, S. J. Maxfield, S. O. Melnikoff, E. S. Miller, W. Moses, R. R. McNeil, P. Nemethy, D. R. Nygren, P. J. Oddone, H. P. Paar, D. A. Park, S. K. Park, D. E. Pellett, M. Pripstein, M. T. Ronan, R. R. Ross, F. R. Rouse, K. A. Schwitkis, J. C. Sens, G. Shapiro, M. D. Shapiro, B. C. Shen, W. E. Slater, J. R. Smith, J. S. Steinman, M. L. Stevenson, D. H. Stork, M. G. Strauss, M. K. Sullivan, T. Takahashi, J. R. Thompson, N. Toge, S. Toutounchi, R. Van Tyen, B. Van Uitert, G. J. Vandalen, R. F. Van Daalen Wetters, W. Vernon, W. Wagner, E. M. Wang, Y. X. Wang, M. R. Wayne

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Abstract

We set an upper limit on the branching fraction B(K-K0)<0.26% at the 95% confidence level. The data sample was obtained with the TPC/Two-Gamma detector facility at the SLAC e+e- storage ring PEP. The process K-K0 is related via SU(3) to the second-class-current decay. Our limit is nearly 20 times smaller than the recently reported branching fraction B of (5.1±1.0±1.2)%, whereas SU(3) symmetry predicts the ratio of to KK production to be at most 5:1. We also measure the branching fraction B(K*-)=(1.5±0. 4*0.4%.

Original languageEnglish
Pages (from-to)751-754
Number of pages4
JournalPhysical review letters
Volume59
Issue number7
DOIs
Publication statusPublished - 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Aihara, H., Alston-Garnjost, M., Avery, R. E., Barbaro-Galtieri, A., Barker, A. R., Barnes, A. V., Barnett, B. A., Bauer, D. A., Bengtsson, H. U., Bintinger, D. L., Bobbink, G. J., Bolognese, T. S., Bross, A. D., Buchanan, C. D., Buijs, A., Caldwell, D. O., Clark, A. R., Cowan, G. D., Crane, D. A., ... Wayne, M. R. (1987). Experimental limit on the decay K-K0. Physical review letters, 59(7), 751-754. https://doi.org/10.1103/PhysRevLett.59.751