Measurement of $e^+e^-\to D_s^{(*)+} D_s^{(*)-}$ cross sections near threshold using initial-state radiation

TL;DR

This paper measures the cross sections of specific charm meson pair production in electron-positron collisions near threshold energies using initial-state radiation, providing detailed energy-dependent data.

Contribution

It presents the first detailed measurement of $e^+e^- o D_s^{(*)+} D_s^{(*)-}$ cross sections near threshold with initial-state radiation at Belle.

Findings

Cross sections as a function of energy are provided.

Results show threshold behavior of charm meson pair production.

Data can inform theoretical models of strong interactions.

Abstract

We report a measurement of exclusive $e^+e^-\to D_s^{(*)+} D_s^{(*)-}$ cross sections as a function of center-of-mass energy near $D_s^{(*)+} D_s^{(*)-}$ threshold with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $967\,\mathrm{fb}^{-1}$.