Proposal to study $B_s\to {\bar{D}}_{sJ}$ transitions

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.

21 pages

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• Progress on semi-leptonic $B_{(s)}$ decays
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• Unexpected pattern of transitions to radial excitations by heavy quark current
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• $B\to D^{\ast \ast }$ -- puzzle 1/2 vs 3/2