Lagrangian-based model of the $e^+e^- \to V \bar V$ process applied to the $e^+e^- \to D^{\ast+} D^{\ast-}$ data

Peter Lichard

high energy physics phenomenology

Lagrangian-based model of the $e^{+} e^{-} \to V V ˉ$ process applied to the $e^{+} e^{-} \to D^{+} D^{-}$ data

arXiv:2607.04210

summary

The paper derives a Breit‑Wigner‑type formula for electron‑positron annihilation into a vector meson and its antiparticle using quantum field theory, and validates it by fitting recent BESIII measurements of the e⁺e⁻ → D*⁺D*⁻ process.

Abstract

Using the quantum field theory, we derive a Breit-Wigner-type formula for the $e^{+} e^{-}$ annihilation into a vector meson and its antiparticle, and relate the formula parameters to observable quantities. The formula's soundness is checked by fitting the $e^{+} e^{-} \to D^{*+} D^{*-}$ data published by the BESIII Collaboration in 2022.

4 pages, 3 figures, corrected Table 1, improved Fig. 2

Topics & keywords

#e+e- annihilation #vector meson production #Breit-Wigner model #phenomenological fitting #BESIII dataBreit-Wigner formulaquantum field theoryD* mesoncross sectionparameter extraction

Lagrangian-based model of the e+e−→VVˉ process applied to the e+e−→D∗+D∗− data

Abstract

Topics & keywords

Lagrangian-based model of the $e^{+} e^{-} \to V V ˉ$ process applied to the $e^{+} e^{-} \to D^{+} D^{-}$ data