| Autor: |
J. F. Martin, B. R. Kumar, William J Spalding, Stephen B. Bracker, G. J. Luste, Carlos Escobar, Sokoloff, Menary, J. E. Duboscq, M. H.G. Souza, K. Sliwa, Elliot, A.B. Stundzia, Streetman Me, A. Bean, L. M. Cremaldi, Milind Purohit, J. Pinfold, Paul M. Mantsch, Alberto Santoro, M. C. Gibney, P. E. Karchin, Thomas Nash, Punkar G, A. L. Shoup, R. J. Morrison, J. A. Appel, G. F. Hartner, T. E. Browder, M. J. Losty, Michael S. Witherell, P. Ong, S. McHugh, J. C. Anjos |
| Rok vydání: |
1991 |
| Předmět: |
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| Zdroj: |
Physical Review D. 43:R635-R640 |
| ISSN: |
0556-2821 |
| Popis: |
Using data from the Fermilab photoproduction experiment E691, we have measured branching ratios for the Cabibbo-suppressed decays {ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{ital K+}{pi}{sup {minus}}, {ital D}{sup 0}{r arrow}{ital K}{sup 0}{ital K{minus}}{pi}{sup +}, {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital K+}{pi}{sup {minus}}{pi}{sup +}, and {ital D}{sup 0}{r arrow}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}}{pi}{sup {minus}}. The data show evidence for several quasi-two-body decays including {ital D}{sup 0}{r arrow}{ital K}{sup *+}{ital K{minus}} and {ital D}{sup 0}{r arrow}{ital {bar K}} {sup *0}{ital K*0}, but not {ital D}{sup 0}{r arrow}{ital K}{sup *{minus}}{ital K+}. The relative rates of the charged decays indicates that final-state mesons containing virtual-{ital W}{sup +}-decay quarks are more likely to emerge as vector mesons than are those containing the spectator quarks. The high rate observed for {ital D}{sup 0}{r arrow}{ital {bar K}} {sup *0}{ital K*0} indicates that hadronic final-state interactions play a measurable role in charm decays. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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