...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physics of atomic nuclei >Features of pC Interactions at a Momentum of 4.2 GeV/c versus the Degree of Centrality of a Collision between a Proton and a Carbon Nucleus: Kinematical Features of Secondaries
【24h】

Features of pC Interactions at a Momentum of 4.2 GeV/c versus the Degree of Centrality of a Collision between a Proton and a Carbon Nucleus: Kinematical Features of Secondaries

机译：动量为4.2 GeV / c的pC相互作用的特征与质子与碳核之间碰撞的中心度：次级分子的运动学特征

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

The mean values of the momenta and emission angles of charged pions and protons in the laboratory frame are presented both for the total ensemble of interactions between 4.2-GeV/c protons and a carbon nucleus and for six groups of events characterized by different degrees of collision centrality. The distributions with respect to the total and the transverse momentum are presented for the particles being studied, along with the longitudinal-rapidity distributions. Our experimental data are compared with the predictions of the cascade–evaporation model and of two versions of the refined FRITIOF model. It is shown that, as the degree of collision centrality becomes higher, the mean momenta and rapidities of secondaries decrease, the transverse momenta remain virtually unchanged, and the mean angles of particle emission increase. This is consistent with the pattern of particle cascading in nuclei. However, the mean transverse momentum t> of participant protons that was obtained on the basis of the cascade–evaporation model decreases with increasing degree of collision centrality, in contrast to what is observed in our experiment. A satisfactory description of experimental data is obtained on the basis of the refined FRITIOF model taking into account △~+ and △~0 isobars. The stopping power of carbon nuclei for 4.2-GeV/c protons is also determined.
机译：给出了实验室框架中带电离子和质子的动量矩和发射角的平均值，既显示了4.2-GeV / c质子与碳核之间相互作用的总合，又显示了以不同程度的碰撞为特征的六组事件中心性。给出了被研究颗粒相对于总动量和横向动量的分布以及纵向快速分布。我们的实验数据与级联蒸发模型和精炼FRITIOF模型的两个版本的预测进行了比较。结果表明，随着碰撞中心度的增大，二次矩的平均矩和速度减小，横向矩几乎保持不变，粒子发射的平均角度增大。这与粒子在核中级联的模式一致。然而，与碰撞实验相比，根据级联蒸发模型获得的质子平均横向动量t>随着碰撞中心度的增加而减小。在考虑到△〜+和△〜0等压线的改进FRITIOF模型的基础上，获得了令人满意的实验数据描述。还确定了4.2-GeV / c质子的碳核的终止能力。

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