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arXiv · 1105.4944

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

Elias Mengesha·Shashank Bhatnagar
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Abstract

In this work we study the process $e^{+}+e^{-}\longrightarrow J/\Psi+\eta_{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.

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Elias Mengesha, Shashank Bhatnagar. 2011-05-25. Cross section for double charmonium production in electron-positron annihilation at energy $\sqrt{s}$= 10.6 GeV. https://doi.org/10.1142/s0218301311030017

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