Isospin violating mechanisms in quarkonium hadronic decays |
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Authors: | LI Gang ZHANG Yuan-Jiang ZHAO Qiang ZOU Bing-Song |
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Abstract: | We analyze the φ meson production in e+e-→ωπ0 as a probe for studying the isospin violation mechanisms.By clarifying the dynamic sources causing the isospin violation,we succeed in quantifying those mechanisms with the help of the recent KLOE data.Hence,the φ→ωπ0 branching ratio is extracted.We find that apart from the electromagnetic(EM)transitions,the strong transition via intermediate kaon loops plays an important role in understanding the cross section and its lineshape. |
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Keywords: | Isospin violation Intermediate meson loop |
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