====== TTP02-11 Asymptotics of the Perturbative Series for $f_{B^*} /f_B$ ======
 
 
   <hidden TTP02-11  Asymptotics of the Perturbative Series for $f_{B^*} /f_B$ > 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.
 </hidden>
|**F. Campanario, A. G. Grozin, T. Mannel**  | 
|**  Nucl.Phys.   B663 280-318 2003  **  |
| {{preprints:2002:ttp02-11.pdf|PDF}} {{preprints:2002:ttp02-11.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0303052|arXiv]]   |
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