====== TTP02-28 Subleading Shape Functions and the Determination of $V_{ub}$ ======
 
 
<hidden TTP02-28  Subleading Shape Functions and the Determination of $V_{ub}$ > The endpoint region of the inclusive lepton energy spectrum
 in $B \to X_u \ell \bar\nu$ can be used for a determination of
 $V_{ub}$ by comparing it to the endpoint region of the
 inclusive photon spectrum of $B \to X_s \gamma$. We consider
 the subleading twist contributions to this $V_{ub}$ determination.
 </hidden>
|**Thomas Mannel**  | 
|**  Proceedings of ICHEP 2002, Elsevier Science B.V., Bentvelsen et al.  Eds.    472-474 2002  **  |
| {{preprints:2002:ttp02-28.pdf|PDF}} {{preprints:2002:ttp02-28.ps|PostScript}}   |
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