Isospin violating mechanisms in quarkonium hadronic decays

LI Gang; ZHANG Yuan-Jiang; ZHAO Qiang; ZOU Bing-Song

doi:10.1088/1674-1137/34/6/037

Chinese Physics C> 2010, Vol. 34> Issue(6) : 842-847 DOI: 10.1088/1674-1137/34/6/037

Isospin violating mechanisms in quarkonium hadronic decays

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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.

References

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LI Gang, ZHANG Yuan-Jiang, ZHAO Qiang and ZOU Bing-Song. Isospin violating mechanisms in quarkonium hadronic decays[J]. Chinese Physics C, 2010, 34(6): 842-847. doi: 10.1088/1674-1137/34/6/037

LI Gang, ZHANG Yuan-Jiang, ZHAO Qiang and ZOU Bing-Song. Isospin violating mechanisms in quarkonium hadronic decays[J]. Chinese Physics C, 2010, 34(6): 842-847. doi: 10.1088/1674-1137/34/6/037 shu

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Received: 2010-01-26
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Isospin violating mechanisms in quarkonium hadronic decays

Corresponding author: LI Gang,

Received Date: 2010-01-26

Accepted Date: 1900-01-01

Available Online: 2010-06-05

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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Isospin violating mechanisms in quarkonium hadronic decays

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