| Autor: |
Streetman Me, Carlos Escobar, R. J. Morrison, M. D. Sokoloff, J. F. Martin, M. J. Losty, Stephen B. Bracker, L. M. Cremaldi, S. Menary, Michael S. Witherell, P. E. Karchin, Milind Purohit, M. H.G. Souza, G. J. Luste, Thomas Nash, P. Ong, Paul M. Mantsch, J. E. Duboscq, Punkar G, B. R. Kumar, W. R. Ross, S. McHugh, K. Sliwa, J. C. Anjos, A. L. Shoup, M. C. Gibney, G. F. Hartner, Alberto Santoro, J. A. Appel, A. B. Stundžia, J. Pinfold, T. E. Browder, A. Bean, William J Spalding, J R Elliot |
| Rok vydání: |
1992 |
| Předmět: |
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| Zdroj: |
Physical Review D. 46:R1-R5 |
| ISSN: |
0556-2821 |
| Popis: |
Using data from the Fermilab photoproduction experiment E691, we have measured the branching ratio for the decay {ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{pi}{sup 0} to be (5.0{plus minus}0.8{plus minus}0.9)%. We see no evidence for the decay {ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{ital K0} and set a 90% confidence level upper limit of 0.12%. The large {ital {bar K}} {sup 0}{pi}{sup 0} branching ratio (relative to {ital K}{sup {minus}}{pi}{sup +}) indicates either a lack of color suppression or significant elastic final-state interactions. The upper limit on the {ital {bar K}} {sup 0}{ital K0} mode indicates that final-state interactions mix final states such as {ital K}{sup +}{ital K{minus}} or {pi}{sup +}{pi}{sup {minus}} into the {ital {bar K}} {sup 0}{ital K0} less than 27% of the time at the 90% confidence level. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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