Hadronic D decays involving even-parity light mesons

Understand

We study the hadronic D meson decays into a pseudoscalar meson $P$ and an even-parity meson $M$, where $M$ represents a scalar meson $S$, an axial-vector meson $A$, or a tensor meson $T$.

• These decays are first analyzed in the flavor-diagram approach.
• Fits to the $SP$ modes with $S$ being a non-strange scalar meson show that neither the simple $q\bar q$ picture nor the $q^2\bar q^2$ scheme is favored by data.
• Current measurements on the $AP$ decays are insufficient for a meaningful analysis.