Ds0*(2317) and Ds1(2460) mesons in two-body B-meson decays

TL;DR

This paper investigates B-meson decays into D(*) and Ds0*(2317)/Ds1(2460) mesons using factorization, heavy quark symmetry, and molecular assumptions, comparing theoretical predictions with experimental data.

Contribution

It introduces a model-independent analysis of form factors and calculates decay constants assuming a molecular structure for the Ds mesons, providing new insights into their decay mechanisms.

Findings

Calculated branching ratios agree with experimental data.

Form factors are derived from heavy quark symmetry and dispersive constraints.

Decay constants suggest a molecular nature for Ds0* and Ds1 mesons.

Abstract

We analyze the branching ratios of B to D(*) + Ds0*(Ds1) decays using the factorization hypothesis. The B to D(*) transition form factors are taken from a model-independent analysis done by Caprini, Lellouch and Neubert based on heavy quark spin symmetry and dispersive constraints, including short-distance and power corrections. The leptonic decay constants fDs0* and fDs1 are calculated assuming a molecular structure for the Ds0* and Ds1 mesons. The calculated branching ratios of B-meson two-body decays are compared with experimental data and other theoretical results.