Theoretical study in the (B)over-bar0 → J/ψ(K)over-bar*0K0 and (B)over-bar0 → J/ψf1(1285) decays

We study the decay processes of (B) over bar (0) -> J/psi(K) over bar*K-0(0) and (B) over bar (0)-> J/psi f(1)(1285) to analyze the f(1)(1285) resonance. By the calculation within chiral unitary approach where f(1)(1285) resonance is dynamically generated from the K* K*(K) over bar - c.c. interaction, we find that the (B) over bar*K-0(0) invariant mass distribution has a clear broad peak. Such broad peak has been understood as the signal of the f(1)(1285). Finally, we obtain a theoretical result R-t = Gamma((B) over bar0 -> J/psi(K) over bar *0 (K) over bar0)/Gamma((B) over bar0 -> J/psi f1(1285)) which is expected to be compared with the experimental data.

Automated summary

By studying the decay processes of (B) over bar (0), we analyzed the characteristics of the f(1)(1285) resonance and obtained a theoretical result for comparison with experimental data. The f(1)(1285) resonance is dynamically generated from the K* K* interaction within the chiral unitary approach.