arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1012.2455hep-ph
收藏

电子正电子湮没中$ωπ^0$对的产生

Production of $ωπ^0$ pair in electron-positron annihilation

A. B. Arbuzov, E. A. Kuraev, M. K. Volkov

摘要:

在SU(2)$\times$ SU(2)Nambu-Jona-Lasinio模型框架下,研究了电子正电子湮没湮灭为一对$π^0$和$ω$介子的过程.考虑了中间光子、$ρ(770)$和$ρ'(1450)$矢量介子的贡献。结果表明,在能量低于2 GeV的大部分截面由中间态$ρ'(1450)$的过程提供。单光子和$ρ(770)$交换的贡献与矢量介子优势模型一致。数值结果与实验数据进行了比较。

英文摘要:

The process of electron-positron annihilation into a pair of $π^0$ and $ω$ mesons is considered in the framework of the SU(2)$\times$SU(2) Nambu--Jona-Lasinio model. Contributions of intermediate photons, $ρ(770)$ and $ρ'(1450)$ vector mesons are taken into account. It is shown that the bulk of the cross section at energies below 2 GeV is provided by the process with intermediate $ρ'(1450)$ state. The contribution due to single photon and $ρ(770)$ exchange is in agreement with the vector meson dominance model. Numerical results are compared with experimental data.

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。

↑