Journal of High Energy Physics (Dec 2019)

Vector and scalar mesons’ mixing from QCD sum rules

  • Ze-Sheng Chen,
  • Zhu-Feng Zhang,
  • Zhuo-Ran Huang,
  • T.G. Steele,
  • Hong-Ying Jin

DOI
https://doi.org/10.1007/JHEP12(2019)066
Journal volume & issue
Vol. 2019, no. 12
pp. 1 – 19

Abstract

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Abstract We study q ¯ $$ \overline{q} $$ q-hybrid mixing for the light vector mesons and q ¯ $$ \overline{q} $$ q-glueball mixing for the light scalar mesons in Monte-Carlo based QCD Laplace sum rules. By calculating the two-point correlation function of a vector q ¯ $$ \overline{q} $$ γ μ q (scalar q ¯ $$ \overline{q} $$ q) current and a hybrid (glue- ball) current we are able to estimate the mass and the decay constants of the corresponding mixed “physical state” that couples to both currents. Our results do not support strong quark/gluonic mixing for either the 1 −− or the 0++ states.

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