Production of hadron pairs in electron-positron annihilation near the K(+)K(-), D-Dbar, B-Bbar and Lambda(c)(+)-Lambda(c)(-) thresholds

TL;DR

This paper analyzes electron-positron annihilation into hadron pairs near various quark thresholds, identifying known and potential resonances and their properties using a new production formalism.

Contribution

It introduces a novel production formalism to study cross sections and resonance structures in electron-positron annihilation near multiple hadron thresholds.

Findings

Identification of known resonances near thresholds

Estimation of masses and widths for tentative resonances

Insights into non-resonant contributions to cross sections

Abstract

We study the structures in cross sections and R ratios concerning electron-positron annihilation reactions, for open-strangeness, open-charm and open-beauty hadron-pair production, from the perspective of a recently developed production formalism. Special attention is paid to non-resonant contributions. Known, tentative, and yet unknown resonances are spotted, with estimates for their masses and widths.