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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1608.06394hep-phhep-ex
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π介子束引起的$K^0 Λ$和$D^- Λ_c^+$的产生

$K^0 Λ$ and $D^- Λ_c^+$ production induced by pion beams off the nucleon

Sang-Ho Kim, Hyun-Chul Kim, Atsushi Hosaka

摘要:

我们提出了一个比较研究的π诱导生产的$K^0 Λ$和$D^- Λ_c^+$的核子。一个混合框架是利用一个有效的拉格朗日方法与Regge方法相结合。在平面图上用矢量介子Reggeon交换考虑了$t$ -通道过程,在非平面图上用重子Reggeon交换考虑了$u$ -通道过程.本模型仅用少量参数就能很好地再现$K^0 Λ$生产数据。修正后,我们预测了$D^- Λ_c^+$的产生,根据运动学区域的不同,它比奇异值小$10^4-10^6$倍。

英文摘要:

We present a comparative study of the pion induced production of $K^0 Λ$ and $D^- Λ_c^+$ off the nucleon. A hybrid framework is utilized by combining an effective Lagrangian method with a Regge approach. We consider the $t$-channel process in a plannar diagram by vector-meson Reggeon exchanges and the $u$-channel one in a non-planar diagram by baryon Reggeon exchanges. The present model reproduces the $K^0 Λ$ production data well with a few parameters. Having fixed them, we predict the $D^- Λ_c^+$ production, which turns out to be about $10^4-10^6$ times smaller than the strangeness one, depending on the kinematical regions.

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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