Search for bbb¯b¯ tetraquark decays in 4 muons, B+B−, B0B¯0 and Bs0B¯s0 channels at LHC

Autor: C. Becchi, A. Giachino, L. Maiani, E. Santopinto
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Physics Letters B, Vol 806, Iss , Pp 135495- (2020)
Druh dokumentu: article
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2020.135495
Popis: 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 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.
Databáze: Directory of Open Access Journals
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