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arXiv 2102.08402hep-ph
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揭示PDMATHAAB和$\bar{B}\to J/ψ\bar{K}^*π$衰变中的$K_1(1270)$双极结构

Unveiling the $K_1(1270)$ double-pole structure in the $\bar{B}\to J/ψρ\bar{K}$ and $\bar{B}\to J/ψ\bar{K}^*π$ decays

J. M. Dias, G. Toledo, L. Roca, E. Oset

摘要:

通过观察$\bar{B}\to J/ψρ\bar{K}$和$\bar{B}\to J/ψ\bar{K}^*π$弱衰变中的赝标矢量介子谱,利用手征么正方法来解释赝标矢量介子和赝标矢量介子之间的末态相互作用,从理论上研究了$K_1(1270)$共振的双极结构. $K_1(1270)$共振表现为通过耦合通道中的这些相互作用动态产生,并影响所考虑的不变质量分布的形状。我们展示了这些形状是如何受到$K_1(1270)$双极结构的影响,以面对我们的模型与未来的实验,可能会调查这些衰变的$PV$光谱的结果。

英文摘要:

By looking at the pseudoscalar-vector meson spectra in the $\bar{B}\to J/ψρ\bar{K}$ and $\bar{B}\to J/ψ\bar{K}^*π$ weak decays, we theoretically investigate the double-pole structure of the $K_1(1270)$ resonance by using the Chiral Unitary approach to account for the final state interactions between the pseudoscalar and vector mesons. The $K_1(1270)$ resonance appears as dynamically generated through these interactions in coupled channels and influence the shape of the invariant mass distributions under consideration. We show how those shapes are affected by the $K_1(1270)$ double-pole structure to confront the results from our model with future experiments that might investigate the $PV$ spectra in these decays.

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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