Analysis of the X(4475), X(4500), $$Z_{\bar{c}\bar{s}}(4600)$$, and related tetraquark states with the QCD sum rules
Year: 2025
Type: article
Abstract: In this work, we introduce an explicit P-wave to construct the diquarks $$[qc]_{\widehat{V}}$$ [ q c ] V ^ , then construct the local four-quark currents to explore the hidden-charm tetraquark states with the $$J^{PC}=0^{++}$$ J PC = 0 + + , $$1^{+-}$$ 1 + - , and $$2^{++}$$ 2 + + in the framework of the QCD sum rules at length. Our calculations indicate that the light-flavor SU(3) breaking effects on the tetraquark masses are tiny. The predictions support assigning the X(4475) and X(4500) as the $$[uc]_{\widehat{V}}[\overline{uc}]_{\widehat{V}}-[dc]_{\widehat{V}}[\overline{dc}]_{\widehat{V}}$$ [ u c ] V ^ [ uc ¯ ] V ^ - [ d c ] V ^ [ dc ¯ ] V ^ and $$[sc]_{\widehat{V}}[\overline{sc}]_{\widehat{V}}$$ [ s c ] V ^ [ sc ¯ ] V ^ tetraquark states with the $$J^{PC}=0^{++}$$ J PC = 0 + + respectively, and assigning the $$Z_{c}(4600)$$ Z c ( 4600 ) and $$Z_{\bar{c}\bar{s}}(4600)$$ Z c ¯ s ¯ (
Source: AAPPS bulletin
Author: Zhi-Gang Wang
Institution: North China Electric Power University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,190
Award: G489048482
OpenAlex ID: W4414212175