We calculate the Wilson coefficients of dimension 6 gluon operators with spin indices in the two point correlation function of the heavy scalar, pseudoscalar, and axialvector currents. Our result completes the list of all Wilson coefficients of gluon operators up to dimension 6 for the correlation functions between heavy quark currents without derivatives. We then use the result to investigate the stability of the QCD sum rule results for the ηc, J/Ψ χc0, and χc1 mesons near Tc. While the inclusion of the dimension 6 operators increases the stability of the sum rules for all currents, all of them break down slightly above Tc with that for the J/ψ persisting to relatively highest temperature.
|Number of pages||21|
|Journal||Nuclear Physics A|
|Publication status||Published - 2017 Dec|
Bibliographical noteFunding Information:
This work was supported by the Korea National Research Foundation under the grant number 2016R1D1A1B03930089 . Appendix A
© 2017 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics