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It is shown that in the decays B c (2P) → B * c γ hard , B c (3P) → B * c γ hard and B c (2S) → B * c + π + π - followed by the decay B * c → B c + γ soft the loss of the soft photon γ soft do not wash out peaks from the initial excitations.The relative yields of B * c , 2P-wave, and 3P-wave states of B c meson at LHC are estimated as function of transverse energy of emitted photon γ hard .It is pointed out, that the decays B c (2S) → B c (B * c ) + π + π -could provide a new information about a σ resonance nature.
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Berezhnoy et al. (2014) studied this question.