Search for the D^*D^* molecular state Z_c(4000) in the reaction B^- → J/ψρ⁰ K^-

2020/01/18 by Zhang, Yang, Wang, En, Li, De-Min +1
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2001.06624

Abstract

Based on the prediction of a D^*D^* molecular state Z_c(4000) with isospin I=1 in the coupled channel approach, we suggest to search for this state in the reaction B^- → J/ψρ⁰ K^-. By taking into account the final state interactions of J/ψρ and D^*0D^*0, and the contribution from the K₁(1270) resonance, we find that the J/ψρ mass distribution shows a peak around 4000~MeV, which could be associated to the D^*D^* molecular state Z_c(4000). Searching for the Z_c(4000) in the reaction B^- → J/ψρ⁰ K^- is crucial to understand the internal structures of the exotic hadrons, and our predictions can be tested by the Belle II and LHCb in future.

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