Production of B B̄ bound state via Υ (4S) radiative decays

Motivated by recent theoretical predictions about the existence of a B B̄ bound state (also denoted as $ X(10550) $), in this work we estimate the production of the S-wave B⁺ B⁻ molecule via Υ (4S) radiative decays. In particular, we make use of effective Lagrangian approach and the compositeness condition to calculate the $ X(10550) $ production rate via Υ(4S)→ γ X(10550) decays employing triangle diagrams. Our results show that the partial decay width of this reaction is of the order of 0.5 - 192 \ for a respective binding energy of $1 - 100 $ MeV, corresponding to a branching fraction of 10⁻⁵ - 10⁻³. These findings suggest that the existence of the $ X(10550) $ might be checked via the analysis of the mentioned decay in present and future experiments.