Asymptotics of the perturbative series for
Mar, 200345 pages
Published in:
- Nucl.Phys.B 663 (2003) 280-318,
- Nucl.Phys.B 670 (2003) 331-332 (erratum)
e-Print:
- hep-ph/0303052 [hep-ph]
DOI:
Report number:
- TTP02-11,
- SFB-CPP-03-03
View in:
Citations per year
Abstract:
We investigate the structure of the leading IR renormalon singularity in the QCD/HQET matching coefficients for heavy-light quark currents beyond the large-\beta_0 limit. From this result, we derive the large-order behaviour of the perturbative series for these coefficients, and for ratios of meson matrix elements, such as f_{B^*}/f_B.Note:
- 45 pages, 2 eps figures. v2: small corrections, reference added. v3: reference added. v4: errors in some equations of Appendix B, in (5.8) and Table 2 corrected, numerical changes are very small. Paper also available from http://www-ttp.physik.uni-karlsruhe.de/Preprints/ Report-no: TTP02-11 Journal-ref: Nucl.Phys. B663 (2003) 280-318
- 12.38.Cy
- 12.39.Hg
- Heavy quark effective theory
- Renormalons
- quantum chromodynamics
- HQET model
- renormalization: renormalon
- singularity
- quark: current
- expansion: mass
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