Measurement of the Inclusive Charm Cross Section at 4.03 GeV and 4.14 GeV

TL;DR

This paper reports precise measurements of inclusive charm meson production cross sections at energies of 4.03 and 4.14 GeV using data from the Beijing Spectrometer, including radiative corrections and extrapolations to total hadronic cross sections.

Contribution

First detailed measurement of inclusive charm cross sections at these energies with radiative corrections and extrapolation methods.

Findings

Measured cross sections for charged and neutral D mesons.

Provided momentum spectra of produced D mesons.

Estimated total hadronic cross sections from charm data.

Abstract

The cross section for charmed meson production at $\sqrt{s} = 4.03 $ and 4.14 GeV has been measured with the Beijing Spectrometer. The measurement was made using 22.3 $pb^{-1}$ of $e^+e^-$ data collected at 4.03 GeV and 1.5 $pb^{-1}$ of $e^+e^-$ data collected at 4.14 GeV. Inclusive observed cross sections for the production of charged and neutral D mesons and momentum spectra are presented. Observed cross sections were radiatively corrected to obtain tree level cross sections. Measurements of the total hadronic cross section are obtained from the charmed meson cross section and an extrapolation of results from below the charm threshold.