Stefan Leupold

collaborators

2 papers

hep-ph2026

Dispersive Analysis of $D$ - and $B$ -Meson Form Factors with Chiral and Heavy-Quark Constraints

Simon Mutke, Leon A. Heuser, Ingrid Dax +2

We analyze the isovector vector form factors of $D$ , $D^{*}$ , $B$ , and $B^{*}$ mesons at low energies. We employ all constraints due to chiral and heavy-quark symmetry, and include the…

hep-ph2025

Kinetic Mixing and Axial Charges in the Parity-Doublet Model

Christian Kummer, Stefan Leupold, Lorenz von Smekal

The standard parity doublet model with its mass-mixing mechanism fails to describe the axial charge $g_{A}$ of the nucleon. While $g_{A} = 1$ in the original Gell-Mann--Levy model, whi…

Dispersive Analysis of D- and B-Meson Form Factors with Chiral and Heavy-Quark Constraints

Kinetic Mixing and Axial Charges in the Parity-Doublet Model

Dispersive Analysis of $D$ - and $B$ -Meson Form Factors with Chiral and Heavy-Quark Constraints