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arXiv 1509.06196nucl-thhep-exhep-phnucl-ex
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有效拉格朗日方法中的$K^- p \to f_1(1285) Λ$反应

The $K^- p \to f_1(1285) Λ$ reaction within an effective Lagrangian approach

Ju-Jun Xie

摘要:

在有效的拉格朗日方法内的$f_1(1285)$共振的生产$K^- p \to f_1(1285) Λ$的反应进行了研究。产生过程由$t$通道$K^{*+}$介子交换描述。我的理论方法是基于手征幺正理论的结果,其中$f_1(1285)$共振是从单通道$\bar{K} K^* - c.c.$相互作用动态产生的。评价了$K^- p \to f_1(1285) Λ$反应的总截面和微分截面。在由手征幺正理论得到的$f_1(1285)$到$\bar{K}K^*$通道的耦合常数和形状因子中的截止参数$Λ_c \sim 1.5$ GeV范围内,可以再现实验测量。该生产过程将为$f_1(1285)$状态的$\bar{K} K^* - c.c.$性质提供进一步证据。

英文摘要:

The production of the $f_1(1285)$ resonance in the reaction of $K^- p \to f_1(1285) Λ$ is studied within an effective Lagrangian approach. The production process is described by the $t$ channel $K^{*+}$ meson exchange. My theoretical approach is based on the results of chiral unitary theory where the $f_1(1285)$ resonance is dynamically generated from the single channel $\bar{K} K^* - c.c.$ interaction. The total and differential cross sections of the $K^- p \to f_1(1285) Λ$ reaction are evaluated. Within the coupling constant of the $f_1(1285)$ to $\bar{K}K^*$ channel obtained from the chiral unitary theory and a cut off parameter $Λ_c \sim 1.5$ GeV in the form factors, the experimental measurement can be reproduced. This production process would provide further evidence for the $\bar{K} K^* - c.c.$ nature of the $f_1(1285)$ state.

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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