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arXiv 0812.4732nucl-th
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$^3$ He+ $p$散射的微观团簇模型研究

A microscopic cluster model study of $^3$He+$p$ scatterings

K. Arai, S. Aoyama, Y. Suzuki

摘要:

我们计算了$^3$ He+ $p$在两种不同微观团簇模型T和C中的散射相移,以显示张量力以及团簇波函数中的$D$波分量的影响.模型T采用一个真实的核子-核子势,包括$D$波,而模型C采用一个有效势,其中张量力效应被认为是重整化到中心力,只包括$S$波的集群内禀运动。在\{ $^3$ He+ $p$ \}+\{ $d$ + 2 $p$ \}耦合道计算中得到了$S$波和$P$波弹性散射相移。在模型T中,$d$ + 2 $p$通道在产生$P$波共振相移中起重要作用,但几乎不影响$S$波非共振相移。然而,在模型C中,$d$ + 2 $p$通道的作用在$S$ -和$P$ -波相移中都受到抑制,这表明它在共振区主要被重整为$^3$ He(1/2 $^+$)+ $p$通道。

英文摘要:

We calculate $^3$He+$p$ scattering phase shifts in two different microscopic cluster models, Model T and Model C, in order to show the effects of tensor force as well as $D$-wave components in the cluster wave function. Model T employs a realistic nucleon-nucleon potential and includes the $D$-wave, whereas Model C employs an effective potential in which the tensor-force effect is considered to be renormalized into the central force and includes only the $S$-wave for the cluster intrinsic motion. The $S$- and $P$-wave elastic scattering phase shifts are obtained in the \{$^3$He+$p$\}+\{$d$ + 2$p$\} coupled-channels calculation. In Model T, the $d$ + 2$p$ channel plays a significant role in producing the $P$-wave resonant phase shifts but hardly affects the $S$-wave non-resonant phase shifts. In Model C, however, the effect of the $d$ + 2$p$ channel is suppressed in both of the $S$- and $P$-wave phase shifts, suggesting that it is renormalized mostly as the $^3$He(1/2$^+$)+$p$ channel in the resonance region.

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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