Comment on "$Z_c$-like spectra from QCD Laplace sum rules at NLO"

Zhi-Gang Wang

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arXiv · 2202.06058

Comment on "$Z_c$-like spectra from QCD Laplace sum rules at NLO"

Zhi-Gang Wang

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Abstract

In Phys. Rev. {\bf D103} (2021) 074015 (arXiv:2101.07281), huge (or largest) mass gaps between the ground states and first radial excited states for the tetraquark molecular states are obtained, $\Delta=1.70\sim 2.35\,\rm{GeV}$. We explore the problems in the operator product expansion, Borel windows, etc, in details.

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Zhi-Gang Wang. 2022-02-12. Comment on "$Z_c$-like spectra from QCD Laplace sum rules at NLO". https://arxiv.org/abs/2202.06058

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