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Artigo Acesso aberto Revisado por pares
BIBTEX RIS

Direct evidence for W exchange in charmed meson decay

1985; Elsevier BV; Volume: 158; Issue: 6 Linguagem: Inglês

10.1016/0370-2693(85)90805-6

ISSN

1873-2445

Autores

H. Albrecht, U. Binder, G. Harder, A. Philipp, W. Schmidt‐Parzefall, H. Schröder, H.D. Schulz, R. Wurth, A. Drescher, B. Gräwe, U. Matthiesen, H. Scheck, J. Spengler, D. Wegener, K. R. Schubert, J. Stiewe, R. Waldi, S. Weseler, N.N. Brown, K. W. Edwards, W.R. Frisken, C. Fukunaga, D.J. Gilkinson, D. M. Gingrich, M. Goddard, P.C.H. Kim, R. Kutschke, D. B. MacFarlane, J. A. McKenna, K. W. McLean, A.W. Nilsson, R. S. Orr, P. Padley, P. M. Patel, J.D. Prentice, H. Seywerd, B.J. Stacey, T.-S. Yoon, J. C. Yun, R. Ammar, D. Coppage, R. Davis, S. G. Kanekal, N. Kwak, G. Kernel, M. Pleško, L. Jönsson, Y. Oku, A. Babaev, M. Danilov, A. Golutvin, V. Lubimov, V. Matveev, V. Nagovitsin, V. Ryltsov, A. Semenov, V. Shevchenko, V. Soloshenko, V. Sopov, I. Tichomirov, Yu. Zaitsev, R. Childers, C.W. Darden, H. Gennow,

Tópico(s)

High-Energy Particle Collisions Research

Resumo

Using the ARGUS detector at DORIS II, we have observed a signal of 36.7±8.0 events in the decay channel D0→Ks0φ. In the same data sample, we have observed the well established decay D0→Ks0π+π−, and find the ratio, Br(D)0→Ks0φ)Br(D)0→Ks0π+π−), to be 0.186±0.052. The substantial value of (0.99±0.32±0.17)% then derived for the branching ratio for D0→K0φ gives direct evidence that W exchange contributes D0 decay.

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