Chin. Phys. Lett.  2006, Vol. 23 Issue (11): 2920-2923    DOI:
Original Articles |
Stabilization and Consistency for Subtracted and Unsubtracted QCD Sum Rules for 0++ Scalar Glueball
ZHANG Zhen-Yu;LIU Jue-Ping
College of Physics and Technology, Wuhan University, Wuhan 430072
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ZHANG Zhen-Yu, LIU Jue-Ping 2006 Chin. Phys. Lett. 23 2920-2923
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Abstract Based on a semi-classical expansion for quantum chromodynamics in the instanton liquid background, the correlation function of the 0++ scalar glueball current is calculated. Besides the pure classical and quantum contributions, the contributions arising from the interactions between the classical instanton fields and quantum gluon ones come into play. It turns out that the latter contributions have a great role not only in making the stabilization of the subtracted and unsubtracted Laplace-transformed QCD sum rules for 0++ scalar glueball, but also in bring back the consistency between the two related sum rules, or equivalently between the QCD asymptotic expression and low energy theorem. The result for the scalar glueball mass is predicted to be mG=1.35GeV.
Keywords: 11.15.Tk      12.38.Lg      11.55.Hx      11.15.Kc      12.39.Mk     
Published: 01 November 2006
PACS:  11.15.Tk (Other nonperturbative techniques)  
  12.38.Lg (Other nonperturbative calculations)  
  11.55.Hx (Sum rules)  
  11.15.Kc (Classical and semiclassical techniques)  
  12.39.Mk (Glueball and nonstandard multi-quark/gluon states)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I11/02920
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