English

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

High Energy Physics - Phenomenology 2017-09-28 v1

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 ΥΥ\Upsilon\Upsilon threshold. If such a state exists below the ηbηb\eta_b\eta_b threshold it would be narrow, as Zweig allowed strong decays are kinematically forbidden. Given the observation of Υ\Upsilon pair production at CMS, such a state with a large branching fraction into ΥΥ\Upsilon \Upsilon^* is likely discoverable at the LHC. The discovery mode is similar to the SM Higgs decaying into four leptons through the ZZZ Z^* 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 ΥΥ\Upsilon\Upsilon^* channel) in the same mass region.

Keywords

Cite

@article{arxiv.1709.09605,
  title  = {Would a Deeply Bound $b\bar b b\bar b$ Tetraquark Meson be Observed at the LHC?},
  author = {Estia Eichten and Zhen Liu},
  journal= {arXiv preprint arXiv:1709.09605},
  year   = {2017}
}

Comments

14 pages, 5 figures, 3 tables