Measurements of Charm Fragmentation into $D_s^{*+}$ and $D_s^+$ in $e^+e^-$ Annihilations at $\sqrt{s}$=10.5 GeV

TL;DR

This paper reports measurements of charm meson fragmentation into $D_s^{*+}$ and $D_s^+$ in electron-positron collisions at 10.5 GeV, providing cross-sections and production ratios based on CLEO II data.

Contribution

First precise measurements of $D_s^{*+}$ and $D_s^+$ production cross-sections and vector-to-total production ratio at this energy.

Findings

Measured cross-sections $\sigma(D_s^{*+})$ and $\sigma(D_s^+)$ above $x=0.44$

Determined the $P_V$ ratio to be 0.44±0.04

Provided data for charm fragmentation models

Abstract

A study of charm fragmentation into $D_s^{*+}$ and $D_s^+$ in $e^+e^-$ annihilations at $\sqrt{s}$=10.5 GeV is presented. This study using $4.72 \pm 0.05$ fb$^{-1}$ of CLEO II data reports measurements of the cross-sections $\sigma(D_s^{*+})$ and $\sigma(D_s^+)$ in momentum regions above $x=0.44$, where $x$ is the $D_s$ momentum divided by the maximum kinematically allowed $D_s$ momentum. The $D_s$ vector to vector plus pseudoscalar production ratio is measured to be $P_V(x(D_s^+)>0.44)=0.44\pm0.04$