Would a Deeply Bound $b\bar{b}b\bar{b}$ Tetraquark Meson be Observed at the LHC?

Abstract

There has been much theoretical speculation about the existence of a deeply bounded tetra-bottom state. Such a state would not be expected to be more than a GeV below ${\rm Y}{\rm Y}$ threshold. If such a state exists below the ${\eta }_b{\eta }_b$ threshold it would be narrow, as Zweig allowed strong decays are kinematically forbidden. Given the observation of ${\rm Y}$ pair production at CMS, such a state with a large branching fraction into ${\rm Y}{{\rm Y}}^{\ast }$ is likely discoverable at the LHC. The discovery mode is similar to the SM Higgs decaying into four leptons through the $Z{Z}^{\ast }$ channel. The testable features of both production and the four lepton decays of such a tetra-bottom ground state are presented. The assumptions required for each feature are identified, allowing the application of our results more generally to a resonance decaying into four charged leptons (through the ${\rm Y}{{\rm Y}}^{\ast }$ channel) in the same mass region.

14 pages, 5 figures, 3 tables

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• Heavy quarkonium: progress, puzzles, and opportunities
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• Measurement of prompt J/psi pair production in pp collisions at sqrt(s) = 7 TeV
• Stability of tetrons
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Cited by in corpus (3)

• The Hydrogen Bond of QCD in Doubly Heavy Baryons and Tetraquarks
• The Hydrogen Bond of QCD
• The bosonic algebraic approach applied to the $[QQ][\bar{Q}\bar{Q}]$ tetraquarks