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APS » Journals » Phys. Rev. D » Volume 41 » Issue 5
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Phys. Rev. D 41, 1389–1400 (1990)

J/ψ→vector+pseudoscalar decays and the quark content of η and η′

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J. Jousset, Z. Ajaltouni, A. Falvard, H. Jnad, B. Michel, and J. C. Montret (DM2 Collaboration)
Laboratoire de Physique Corpusculaire, Université de Clermont II, BP 45, F-63170 Aubière, France

D. Bisello, G. Busetto, A. Castro, L. Pescara, F. Racioppi, P. Sartori, and L. Stanco
Dipartimento di Fisica dell'Università di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy

J. E. Augustin, G. Cosme, F. Couchot, F. Fulda, G. Grosdidier, B. Jean-Marie, V. Lepeltier, F. Mane, and G. Szklarz
Laboratoire de l'Accélérateur Linéaire, Université de Paris-Sud, F-91405 Orsay, France

R. Baldini and M. Schioppa
Laboratori Nazionali di Frascati dell'Istituto Nazionale di Fisica Nucleare, CP 13, I-00044 Frascati, Italy

Received 5 June 1989; published in the issue dated 1 March 1990

Branching ratios of J/ψ decays into ωπ0, ωη, ωη′, ρη, ρη′, φη, φη′, and K*(892)K̅ +charge conjugate are measured from the 8.6 × 106 J/ψ's produced by the DM2 experiment at the Orsay e+e- storage ring DCI. The η and η′ mesons are found consistent with a qq̅ structure and a mixing angle θP=(-19.1±1.4)°.

© 1990 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.41.1389
DOI:
10.1103/PhysRevD.41.1389
PACS:
 
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