Search for $bb\bar{b}\bar{b}$ tetraquark decays in 4 muons, $B^{+} B^{-}$, $B^0 \bar{B}^0$ and $B_s^0 \bar{B}_s^0$ channels at LHC

We perform a quantitative analysis of the bbb¯b¯ tetraquark decays into hidden- and open-bottom mesons and calculate, for the first time, the bbb¯b¯ tetraquark total decay width. On the basis of our results, we propose the bbb¯b¯→B+B−(B0B¯0)(Bs0B¯s0)→l+l−+X decays as the most suitable channels to observe the bbb¯b¯ tetraquark states, since the calculated two-lepton cross section upper limit, ≃39 fb, is so large as to be potentially detectable with the 2018 LHCb sensitivity, paving the way to the observation of the bbb¯b¯ tetraquark in the future LHCb upgrade. The 4 μ signal for the ground state, JPC=0++ , is likely to be too small even for the upgraded LHCb, but it may not be hopeless for the JPC=2++ fully-bottom state.