Isospin violating mechanisms in quarkonium hadronic decays

摘要：

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.

关键词： Isospin violation Intermediate meson loop

作者: LI Gang ZHANG Yuan-Jiang ZHAO Qiang ZOU Bing-Song

作者单位: Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Department of Phys Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Theoretical Physic

会议类型: 国际会议

会议名称: 国际φ电子到ψ电子正负电子碰撞研讨会

会议地点: 北京

会议语种:英文

页码: 842-847

在线出版日期: 2009-10-13（万方平台首次上网日期，不代表论文的发表时间）