Proposal to study $B_s \to \bar D_{sJ}$ transitions

TL;DR

This paper proposes studying specific B_s decay processes at LHCb to clarify existing puzzles in B decay to broad D** states, leveraging the narrowness of the D_{s0}^* state for easier interpretation.

Contribution

It introduces a new experimental approach to investigate B decay puzzles by focusing on B_s decays involving narrow D_{s0}^* states at LHCb.

Findings

Potential to resolve ambiguities in B decay to broad D** states

Simplified interpretation due to narrow D_{s0}^* resonance

Enhanced understanding of B_s decay mechanisms

Abstract

It is proposed to clear some of the puzzles of B decay to the broad $\bar{D}^{\ast\ast}$ states by studying the corresponding decay with strange states $B_s^0 \to D_{s0}^{\ast -} \pi^+$ at LHCb. Interpretation of the results should be easier due to the narrowness of the $D_{s0}^{\ast -}$ state.