منابع مشابه
Okubo-Zweig-Iizuka Rule Violation and Possible Explanations
Violations of the Okubo-Zweig-Iizuka (OZI) rule in ss̄ ↔ nn̄≡ 1 √ 2 (uū+dd̄) mixing and φ production from NN̄ annihilation are reviewed. Possible explanations are examined. We conclude that the two-step hadronic loops can explain these OZI violations naturally with proper consideration of cancellations between loops. No conclusive evidence exists for glueball states, ss̄nn̄ four quark states, instant...
متن کاملAsymmetries in φ photoproduction and the Okubo - Zweig - Iizuka violation
We study the vector meson density matrix and the associated polarization asymmetries in φ photoproduction near threshold. In order to study the OZI violating processes, we consider the direct φNN coupling as well as the knockout processes arising from the non-vanishing ss̄ sea quarks in the nucleon. The polarization asymmetries in φ meson decays are found to be very useful to constrain the φNN c...
متن کاملFlavour-symmetry correction to the “näıve” Zweig rule for the scalar-meson flavour-singlet
We present flavour-symmetric couplings for the OZI-allowed three-meson vertices of effective meson theories, which for the case of the two-meson channels to which the flavoursinglet scalar meson couples, are endowed with a correction factor with respect to the standard formula.
متن کاملZweig-rule-satisfying inelastic rescattering in B decays to pseudoscalar mesons
We discuss all contributions from Zweig-rule-satisfying SU(3)-symmetric inelastic FSI-induced corrections in B decays to ππ, πK, KK̄, πη(η′), and Kη(η′) . It is shown how all of these FSI corrections lead to a simple redefinition of the amplitudes, permitting the use of a simple diagram-based description, in which, however, weak phases may enter in a modified way. The inclusion of FSI correction...
متن کاملA study of the Okubo - Zweig - Iizuka rule violations in η c → V
We discuss the Okubo-Zweig-Iizuka (OZI) rule violation effects in ηc → V V in light of the new data from BES Collaboration. In particular, a possible non-vanishing branching ratio for ηc → ωφ provides a hint of the degrees of OZI violations based on a recent factorization proposed for charmonium hadronic decays. The violation mechanism is studied via an intermediate meson exchange model. The re...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Zeszyty Naukowe Uniwersytetu Szczecińskiego. Acta Politica
سال: 2018
ISSN: 0867-0617
DOI: 10.18276/ap.2018.46-06