具有Regge贡献的λ(1520)光生
Lambda(1520) photoprodcution with Regge contribution
摘要:
在这次演讲中,我们报告了我们最近的进展,在λ(1520)的光产生使用的有效拉格朗日方法。除了树级玻恩图,我们考虑到可能的奇怪介子交换的t通道的Regge轨迹。我们计算的角度和能量的依赖性的生产过程中,包括偏振可观的,如光子束的不对称性和偏振传输系数,导致与当前的实验数据有很好的定性协议。我们还使用z方向上的偏振传递系数计算了戈特弗里德-杰克逊坐标系中的K^-角分布函数。
英文摘要:
In this talk, we report our recent progresses on the Lambda(1520) photoproduction using the effective Lagrangian approach. In addition to the tree-level Born diagrams, we take into account the Regge-trajectories for the possible strange-meson exchanges in the t channel. We compute the angular and energy dependences of the production process, including polarization observables, such as the photon-beam asymmetry and the polarization-transfer coefficients, resulting in good qualitative agreement with current experimental data. We also compute the K^- angle distribution function in the Gottfried-Jackson frame, using the polarization-transfer coefficients in the z direction.
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