arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.4944hep-ph
收藏

能量为$\sqrt{s}$ = 10.6 GeV的电子正电子湮没中双粲偶素产生的截面

Cross section for double charmonium production in electron-positron annihilation at energy $\sqrt{s}$= 10.6 GeV

Elias Mengesha, Shashank Bhatnagar

摘要:

在这项工作中,我们研究的过程$e^{+}+e^{-}\longrightarrow J/Ψ+η_{c} $的能量$\sqrt{s}= 10.6 GeV$最近观察到的B-工厂的测量由Babar和Belle组。我们计算这个过程的截面在Bethe-salpeter形式主义下的协变瞬时Anstaz(CIA)。为了简化计算,我们在夸克和胶子传播子中采用了重夸克近似$(q<<M, P M)$。在$e^{+}e^{-}$湮灭为两个重夸克偶素的互斥过程中,计算的截面与Babar和Belle的实验数据是一致的。

英文摘要:

In this work we study the process $e^{+}+e^{-}\longrightarrow J/Ψ+η_{c} $ at energy $\sqrt{s}= 10.6 GeV$ observed recently at B-factories whose measurements were made by Babar and Belle groups. We calculate the cross section for this process in the Bethe-salpeter formalism under Covariant Instantaneous Anstaz (CIA). To simplify our calculation, the heavy quark approximation $(q<<M, P M)$ is employed in the quark and gluon propagators. In the exclusive process of $e^{+}e^{-}$ annihilation into two heavy quarkonia, the cross section calculated in this scenario is compatible with the experimental data of Babar and Belle.

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。

↑