Is the Z

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• 作者：Takayuki Matsuki ; Toshiyuki Morii ; Kazutaka Sudoh
• 关键词：Potential model ; Spectroscopy ; Heavy mesons
• 刊名：Physics Letters B
• 出版年：2008
• 出版时间：6 November 2008
• 年：2008
• 卷：669
• 期：2
• 页码：156-159
• 全文大小：228 K

文摘

We present the interpretation that the recently discovered Z⁺(4430) by the Belle Collaboration can be a radial excitation of the state, being consistent with an observed value of the product of branching ratios, . We give an explicit candidate for this state by calculating the mass value in our semirelativistic quark potential model and also give a natural understanding for the facts that the decay mode Z→J/ψπ⁺ has not yet been seen while Z→ψ^′π can be seen.