Charm-Production in e^+e^- Annihilation Around 4 GeV

TL;DR

This study measures how often different charmed mesons are produced in electron-positron collisions around 4 GeV, providing detailed cross sections for various final states to understand charm production mechanisms.

Contribution

First comprehensive measurement of inclusive and exclusive charm meson production cross sections in e+e- annihilation near 4 GeV energy range.

Findings

Measured cross sections for D+, D0, D_s+ mesons at 13 energies

Provided exclusive cross sections for various D meson pair final states

Analyzed processes with charmed mesons accompanied by pions

Abstract

Using the CLEO-c detector at the Cornell Electron Storage Ring, we have measured inclusive and exclusive cross sections for the production of $D^+$, $D^0$ and $D_s^+$ mesons in $e^{+}e^{-}$ annihilations at thirteen center-of-mass energies between 3.97 and 4.26 GeV. Exclusive cross sections are presented for final states consisting of two charmed mesons ($D\bar{D}$, $D^{*}\bar{D}$, $D^{*}\bar{D}^{*}$, $D_s^+ D_s^-$, $D_s^{*+} D_s^-$, and $D_s^{*+} D_s^{*-}$) and for processes in which the charmed meson pair is accompanied by a pion.