Productions of X(3872), $$Z_c(3900)$$ Z c ( 3900 ) , $$X_2(4013)$$ X 2 ( 4013 ) , and $$Z_c(4020)$$ Z c ( 4020 ) in $$B_{(s)}$$ B ( s ) decays offer strong clues on their molecular nature
European Physical Journal C: Particles and Fields(2024)
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