Cross section measurement of $e^{+}e^{-} \to f_{1}(1285)\pi^{+}\pi^{-}$ at center-of-mass energies between $3.808$ and $4.951\rm GeV$

TL;DR

This paper measures the cross sections of the process $e^+e^- o f_1(1285)\pi^+\pi^-$ across a range of energies, finding no significant structures in the energy dependence.

Contribution

First comprehensive measurement of the cross section for $e^+e^- o f_1(1285)\pi^+\pi^-$ over a wide energy range with no observed resonance structures.

Findings

Cross sections measured at 45 energies between 3.808 and 4.951 GeV.

No significant resonance structures observed in the cross section line shape.

Provides valuable data for understanding $e^+e^-$ annihilation processes.

Abstract

Using data samples collected by the \mbox{BESIII} detector located at the Beijing Electron Positron Collider, the cross sections of the process $e^+e^-\to f_{1}(1285)\pi^+\pi^-$ are measured at forty-five center-of-mass energies from $3.808$ to $4.951 {\rm GeV}$. An investigation on the cross section line shape is performed, and no significant structure is observed.