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arXiv 1907.08017hep-ph
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轴向电流引起的$N^*(1535) \rightarrow N $转变形状因子

$N^*(1535) \rightarrow N $ transition form-factors due to the axial current

T. M. Aliev, T. Barakat, K. Simsek

摘要:

在光锥QCD求和规则的框架下,利用内插电流的最一般形式,计算了等矢轴流和等幅轴流引起的跃迁$ N^*(1535)\to N $的形状因子。在数值计算中,我们使用两组输入参数值。观察到形状因子$ G_A $的$ Q^2 $依赖性可以用偶极子形式来描述。此外,发现形状因子$ G_P^{(S)} $对辅助参数$ β$的变化高度敏感。

英文摘要:

The form-factors for the transition $ N^*(1535)\to N $ induced by isovector and isoscalar axial currents within the framework of light-cone QCD sum rules by using the most general form of the interpolating current are calculated. In numerical calculations, we use two sets of values of input parameters. It is observed that the $ Q^2 $ dependence of the form-factor $ G_A $ can be described by the dipole form. Moreover, the form-factors $ G_P^{(S)} $ are found to be highly sensitive to the variations in the auxiliary parameter $ β$.

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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