Search for the decays $B_{(c)}^{+}\to \hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼{\hat{I}}^3$

LHCb collaboration, R. Aaij, M. Abdelfatah +1128

The LHCb experiment searched for the rare radiative leptonic decays B⁺→μ⁺ν_μγ and B_c⁺→μ⁺ν_μγ in 13 TeV proton‑proton collisions, finding no signal and setting upper limits on thei…