# Electro-weak production of pseudovector C-even heavy quarkonia in electron-positron collisions on Belle II and BES III

## TL;DR

This paper discusses the production of specific heavy quarkonium states in electron-positron collisions, highlighting discrepancies with molecular models and proposing new experimental approaches.

## Contribution

It introduces a novel focus on the electro-weak production of pseudovector C-even heavy quarkonia and suggests studying 1 and 1 states in e+e- reactions.

## Key findings

- Molecular model for X(3872) contradicts experimental data.
- Proposes studying 1 and 1 states in e+e- collisions.
- Highlights potential for new experimental investigations.

## Abstract

It is shown that the molecular model for the X{3872) state contradicts the new experimental data as well as the old ones. It is suggested to study the \chi_{c1} and \chi_{b1} states in the e+e-\to\chi_{c1}/\chi_{b1} reactions.