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arXiv 1604.02574hep-ph
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衰变共振复合性的确定:$B^0_s\to J/ψf_1(1285)$的情况

Determination of the compositeness of resonances from decays: the case of the $B^0_s\to J/ψf_1(1285)$

R. Molina, M. Döring, E. Oset

摘要:

我们开发了一种方法来测量的共振,主要是作为两个强子的束缚态的复合量,通过同时测量的共振和质量分布的两个强子接近阈值的生产率。通过使用不同的分析方法,我们得出的结论是,该方法允许提取的1-Z值与约$0.1$的不确定性。该方法适用于$\bar B^0_s \to J/ψf_1(1285)$衰变的情况下,通过查看共振生产和质量分布的$K \bar K^*$。

英文摘要:

We develop a method to measure the amount of compositeness of a resonance, mostly made as a bound state of two hadrons, by simultaneously measuring the rate of production of the resonance and the mass distribution of the two hadrons close to threshold. By using different methods of analysis we conclude that the method allows one to extract the value of 1-Z with about $0.1$ of uncertainty. The method is applied to the case of the $\bar B^0_s \to J/ψf_1(1285)$ decay, by looking at the resonance production and the mass distribution of $K \bar K^*$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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