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arXiv 1102.2070hep-ph
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Z(4430)光生过程中的Regge轨道交换

Photoproduction of Z(4430) through mesonic Regge trajectories exchange

Giuseppe Galatà

摘要:

最近发现的Z(4430)介子共振被认为是一个强的四夸克候选者。通道$γp\rightarrow Z^{+}(4430)n\rightarrow ψ' π^{+} n$中的光生被认为是确认Z(4430)存在和测量其量子数的最有效方法。在这项工作中,我们提出了一个高能量和前向角Z(4430)光生的有效拉格朗日方法的模型。该模型是基于使用Regge轨迹交换,从而Regge传播取代通常的费曼传播。在Z(4430)具有同位旋I=1的假设下,计算了$J^{P}$量子数$1^{-}$,$1^{+}$,$0^{-}$和$2^{-}$的微分截面和全截面以及不对称性.

英文摘要:

The recently discovered Z(4430) mesonic resonance is believed to be a strong tetraquark candidate. The photoproduction in the channel $γp\rightarrow Z^{+}(4430)n\rightarrow ψ' π^{+} n$ has been proposed as the most effective way to confirm the Z(4430) presence and to measure its quantum numbers. In this work we present a model for high energy and forward angle Z(4430) photoproduction in a effective Lagrangian approach. This model is based on the use of Regge trajectories exchange, thus a Regge propagator replaces the usual Feynman propagator. The differential and total cross sections and the asymmetries have been calculated for the $J^{P}$ quantum numbers $1^{-}$, $1^{+}$, $0^{-}$ and $2^{-}$ in the hypotheses that Z(4430) has isospin I=1.

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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