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Disclosing D* (D)over bar* molecular states in the B-c(-) -> pi(-) J/psi omega decay

Author:
Dai, L. R.  Dias, J. M.  Oset, E.  


Journal:
EUROPEAN PHYSICAL JOURNAL C


Issue Date:
2018


Abstract(summary):

We study the B-c(-) -> pi(-) J/omega and B-c(-) -> pi(-) D* (D) over bar* reactions and show that they are related by the presence of two resonances, the X(3940) and X(3930), that are of molecular nature and couple most strongly to D* (D) over bar*, but also to J/psi omega. Because of that, in the J/psi omega mass distribution we find a cusp with large strength at the D* (D) over bar* threshold and predict the ratio of strengths between the peak of the cusp and the maximum of the D* (D) over bar* distribution close to D* (D) over bar* threshold, which are distinct features of the molecular nature of these two resonances.


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