arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1701.06007hep-phhep-ex
收藏

用Regge-有效拉格朗日方法研究$γp \to f_1(1285) p$的反应

Study on the reaction of $γp \to f_1(1285) p$ in Regge-effective Lagrangian approach

Yan-Yan Wang, Li-Juan Liu, En Wang, De-Min Li

摘要:

在Regge有效拉格朗日方法内研究了$γp \rightarrow f_1(1285) p$反应中$f_1(1285)$共振的产生。除了$t$通道的$ρ$和$ω$轨道交换的贡献外,我们还考虑了$s/u$通道$N(2300)$项、$s/u$通道核子项和接触项的贡献.通过对CLAS数据的拟合,我们发现$s$通道$N(2300)$项在该反应中起着重要的作用.我们预测了这个反应的总截面,并发现一个明确的凸块结构周围的$W=2.3$ GeV,这是与$N(2300)$状态。$γp \to f_1(1285) p$的反应为进一步研究$N(2300)$的实验提供了依据。

英文摘要:

The production of the $f_1(1285)$ resonance in the reaction of $γp \rightarrow f_1(1285) p$ is investigated within a Regge-effective Lagrangian approach. Besides the contributions of the $t$-channel $ρ$ and $ω$ trajectories exchanges, we also take into account the contributions of $s/u$-channel $N(2300)$ terms, $s/u$-channel nucleon terms, and the contact term. By fitting to the CLAS data, we find that the $s$-channel $N(2300)$ term plays an important role in this reaction. We predict the total cross section for this reaction, and find a clear bump structure around $W=2.3$ GeV, which is associated with the $N(2300)$ state. The reaction of $γp \to f_1(1285) p$ could be useful to further study of the $N(2300)$ experimentally.

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。

↑