Higher Moments of Heavy Quark Correlators in the Low Energy Limit at O(alpha**2(s))
Nov, 200732 pages
Published in:
- Nucl.Phys.B 797 (2008) 218-242
e-Print:
- 0711.2636 [hep-ph]
Report number:
- TTP07-32,
- SFB-CPP-07-76
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Abstract: (arXiv)
We present the first 30 moments of the low energy expansions of the vector, axial-vector, scalar and pseudo-scalar heavy quark correlation functions at three-loop order, including the singlet contribution which appears for the first time at three loops. In addition we compare the behavior of the moments for large n with the prediction from threshold calculations.- 14.65.Dw
- 12.38.Bx
- 14.65.Fy
- Heavy quarks
- heavy quark
- current: correlation function
- moment
- perturbation theory: higher-order
- asymptotic behavior
- threshold
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