Measurement of the Total Charm Cross Section by Electron-Positron Annihilation at Energies Between 3.97-4.26 GeV

TL;DR

This paper reports precise measurements of charm quark production cross sections in electron-positron collisions at energies between 3.97 and 4.26 GeV, providing valuable data for understanding charm quark dynamics.

Contribution

The study provides the first comprehensive measurement of various charm hadronic cross sections over a range of energies, including radiative corrections to obtain tree-level results.

Findings

Measured cross sections for multiple charm meson pairs.

Provided radiatively corrected tree-level cross sections.

Mapped the energy dependence of charm production cross sections.

Abstract

Using the CLEO-c detector, we have measured the charm hadronic cross sections for $e^{+}e^{-}$ annihilations at a total of thirteen center-of-mass energies between 3.97 and 4.26 GeV. Observed cross sections for the production of $D\bar{D}$, $D^{*}\bar{D}$, $D^{*}\bar{D}^{*}$, $D_{s}\bar{D}_{s}$, $D_{s}^{*}\bar{D}_{s}$, and $D_{s}^{*}\bar{D}_{s}^{*}$, in addition to the total charm cross section are presented. Observed cross sections were radiatively corrected to obtain tree-level cross sections and R.