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arXiv 0902.1818nucl-th
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中能pp --> p n pi+反应的理论研究

Theoretical study on pp --> p n pi+ reaction at medium energies

Z. Ouyang, J. J. Xie, B. S. Zou, H. S. Xu

摘要:

在COSY/CSR能区,$pp\to p n π^+$反应是pp碰撞总截面最大的通道.在这项工作中,我们调查个人的贡献,从各种$N^*$和$Δ^{*}$共振质量高达约2 GeV的$pp\to p n π^+$反应。我们扩展了共振模型,它可以很好地再现所观察到的总截面,给出理论预测的各种微分截面为本反应在$T_p=2.88$ GeV。为今后HIRFL-CSR实验中发现新物理提供了参考。

英文摘要:

The $pp\to p n π^+$ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various $N^*$ and $Δ^{*}$ resonances with mass up to about 2 GeV for the $pp\to p n π^+$ reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various differential cross sections for the present reaction at $T_p=2.88$ GeV. It could serve as a reference for identifying new physics in the future experiments at HIRFL-CSR.

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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