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 $D$, $D^{\ast }$, $B$, and $B^{\ast }$ mesons at low energies. We employ all constraints due to chiral and heavy-quark symmetry, and include the…