Measurement of the Inclusive Cross Sections of Prompt $J/\psi$ and $\psi(3686)$ Production in $e^{+}e^{-}$ Annihilation from $\sqrt{s}=3.808$ to $4.951$ GeV

TL;DR

This paper measures the inclusive production cross sections of prompt J/ψ and ψ(3686) in electron-positron collisions across a range of energies, providing data to test charmonium production theories.

Contribution

It provides the first comprehensive measurement of inclusive prompt J/ψ and ψ(3686) cross sections over a broad energy range, consistent with previous exclusive measurements.

Findings

Cross sections for J/ψ and ψ(3686) are approximately 14 pb and 15 pb respectively.

Measurements are consistent with previous exclusive production results.

Data covers energies from 3.808 to 4.951 GeV, with negligible resonance impact.

Abstract

The inclusive cross sections of prompt $J/\psi$ and $\psi(3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb$^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BESIII detector operating at the BEPCII storage ring. The results obtained are in agreement with the previous BESIII measurements of exclusive $J/\psi$ and $\psi(3686)$ production. The average values obtained for the cross sections measured in the center-of-mass energy ranges from 4.527 to 4.951 GeV for $J/\psi$ and from 4.843 to 4.951 GeV for $\psi(3686)$, where the impact of known resonances is negligible, are $14.0\pm1.7\pm3.1$ pb and $15.3\pm3.0$ pb, respectively. For $J/\psi$, the first and the second uncertainties are statistical and systematic, respectively. For $\psi(3686)$, the uncertainty is total. These values are useful for testing charmonium production models.