Observation of D 0 → K 0 K 0

John Perry Cumalat, C. Shipbaugh,M. Binkley, F. Bossi,J. N. Butler, P. Coteus, M. DiCorato, M. Diesburg, J. Enagonio, J. Filaseta,P. L. Frabetti, I. Gaines,P. H. Garbincius,M. Gormley,J. Haggerty,D. J. Harding,T. Kroc, R. Ladbury, P. Lebrun,P. F. Manfredi, John Peoples, A. Sala, J. Slaughter,James E Wiss

Physics Letters B(1988)

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摘要
Abstract We have observed the decay mode D 0 → K S 0 K S 0 . The signal was isolated by detecting both K S 0 's decaying via K S 0 → π + π − , and by using the well-known D ∗+ → D 0 π + mass difference. We have measured the branching fraction of D 0 → K S 0 K S 0 relative to D 0 → K + K − and find the ratio Γ( D 0 → K 0 K 0 )/Γ( D 0 → K + K − ) to be 0.4 ± 0.3.
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d0,observation
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