Thursday, July 26, 2012

1207.6015 (John Moffat)

Identification of the 125 GeV Resonance as a Pseudoscalar Quarkonium
Meson
   [PDF]

John Moffat
The 125 GeV resonance discovered at the LHC is identified as a heavy quarkonium pseudoscalar meson. The mixing of the bottomnium eigenstate $| b {\bar b}>$ with the toponium eigenstate $| t{\bar t}>$ produces the eigenstates identified with the pseudoscalar heavy quarkonium mesons $\zeta^0$ and $\zeta^{0'}$. For a mixing angle $\phi\sim 20\,^{\circ}$ the mass of the bound state pseudoscalar resonance $\zeta^0$ is $m_{\zeta^0}\sim 126$ GeV. The decay rates of the quarkonium $\zeta^0$ meson are estimated and compared to the standard model Higgs boson predictions. The importance of determining the spin-parity of the 125 GeV resonance is discussed. Criteria for experimentally discriminating between the pseudoscalar, $J^{PC}=0^{-+}$, $\zeta^0$ quarkonium meson and the scalar $J^{PC}=0^{++}$ Higgs boson are investigated.
View original: http://arxiv.org/abs/1207.6015

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