Search for class='math'>$bb\bar{b}\bar{b}$ tetraquark decays in 4 muons, B+B?, class='math'>$B^0{\bar{B}}^0$ and class='math'>$B_s^0{\bar{B}}_s^0$ channels at LHC

摘要

We perform a quantitative analysis of the bbbˉbˉ tetraquark decays into hidden- and open-bottom mesons and calculate, for the first time, the bbbˉbˉ tetraquark total decay width. On the basis of our results, we propose the bbbˉbˉ→B+B?(B0Bˉ0)(Bs0Bˉs0)→l+l?+X decays as the most suitable channels to observe the bbbˉbˉ 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 bbbˉbˉ tetraquark in the future LHCb upgrade. The 4μ 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.