...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal >The role of N~* resonances in the K _p~+ → K ~+K ~+Λ reaction
【24h】

The role of N~* resonances in the K _p~+ → K ~+K ~+Λ reaction

机译：N〜*共振在K _p〜+→K〜+ K〜+Λ反应中的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, we investigate the reaction K _p~+ → K ~+K ~+Λ for K ~+ beam momentum from threshold to 8 GeV within an effective Lagrangian approach where the contributions to the amplitudes are taken into account within the plane wave approximation. By assuming that this reaction is dominated by the excitation of nucleon resonances through ρ, ω, σ and Λ exchanges between initial states, we consider the excitation of the N~*(1650), N~*(1710) and N~*(1720) resonances in the intermediate states. Available experimental data is described well by this approach. It is found that the Λ exchange diagram dominates the production process at lower beam energies and the ρ exchange diagram becomes more important at higher energies. The excitation of N~*(1710) resonance dominates this reaction in the whole energy regime. Furthermore, we also give predictions of invariant mass spectrum, Dalitz plot and angular distribution of final particles with beam momentum at p = 2.3 GeV and p = 6.0 GeV respectively, which should be useful for future experimental studies of this reaction.
机译：在这项工作中，我们在有效的拉格朗日方法中研究了从阈值到8 GeV的K〜+束动量的K _p〜+→K〜+ K〜+Λ反应，其中在平面波内考虑了对振幅的贡献近似。通过假设该反应由初始状态之间的ρ，ω，σ和Λ交换激发核共振引起，我们考虑激发N〜*（1650），N〜*（1710）和N〜*（ 1720）在中间状态的共振。这种方法很好地描述了可用的实验数据。可以发现，在较低的束能量下，交换图主导了生产过程，而在较高的能量下，交换图变得更加重要。 N〜*（1710）共振的激发在整个能量范围内主导了该反应。此外，我们还给出了束动量分别为p = 2.3 GeV和p = 6.0 GeV时最终粒子的不变质谱，Dalitz图和角分布的预测，这对于该反应的未来实验研究将是有用的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号