Mass spectrum of the hidden-charm hybrid states via the QCD sum rules

2024/12/15 by Wang, Zhi-Gang · 2 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2412.11038

Abstract

In this work, we study the mass spectrum of the hidden-charm hybrid states with the J^PC=0^-+, 0⁺⁺, 0^--, 1⁺⁺, 1^+-, 1^-+, 1^--, 2^-+ and 2⁺⁺ via the QCD sum rules in a consistent way. We calculate the vacuum condensates up to dimensions-6 by taking account of both the leading order and next-to-leading order contributions, and take the energy scale formula μ=√M²_X/Y/Z-(2\mathbbM_c)² to choose the suitable energy scales of the QCD spectral densities, it is the first time to explore the energy scale dependence of the QCD sum rules for the hidden-charm hybrid states.

Cited by

• A hybrid nonet with J^PC=1^-+ or a tetraquark 81-plet
• Decays of the vector charmonium and bottomonium hybrids

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