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Heavy Quarkonium ($1^{--}$) Meson-Hybrid Mixing from QCD Sum Rules

Authors :
Palameta, A.
Ho, J.
Harnett, D.
Steele, T. G.
Publication Year :
2017

Abstract

We use QCD Laplace sum-rules to explore mixing between conventional mesons and hybrids in the heavy quarkonium vector $J^{PC}\!=\!1^{--}$ channel. Our cross-correlator includes perturbation theory and contributions proportional to the four-dimensional and six-dimensional gluon condensates. We input experimentally determined charmonium and bottomonium hadron masses into both single and multi-resonance models in order to test them for conventional meson and hybrid components. In the charmonium sector we find evidence for meson-hybrid mixing in the $J/\psi$ and a $\approx4.3$ GeV resonance. In the bottomonium sector, we find that the $\Upsilon(1S)$, $\Upsilon(2S)$, $\Upsilon(3S)$, and $\Upsilon(4S)$ all exhibit mixing.<br />Comment: QCD-17 conference proceedings article

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.1709.04542
Document Type :
Working Paper
Full Text :
https://doi.org/10.1016/j.nuclphysbps.2018.03.015