====== TTP08-33 Higgs hunting with B decays ======
 
 
   <hidden TTP08-33  Higgs hunting with B decays >   B physics is sensitive to the effects of Higgs bosons in the
   Minimal Supersymmetric Standard Model, if
   the parameter $\tan\beta$ is large. I briefly summarise the role
   of $B\to \mu^+\mu^-$ and $\BTNp$ in the hunt for new Higgs effects
   and present new results on the decay $\BDTN$:
   Using the analyticity properties of form factors one can predict the
   ratio $R\equiv\mathcal{B}(\BDTN)/\mathcal{B}(\BDLN)$, $\ell=e,\mu$,
   with small hadronic uncertainties. In the Standard Model one
   finds $R= 0.31 \pm 0.02$, ${\cal B} (B^- \to D^0 \tau^-
   \bar{\nu}_{\tau}) = (0.71\pm 0.09)\% $ and ${\cal B} (\bar{B}^0 \to
   D^+ \tau^- \bar{\nu}_{\tau})= (0.66\pm 0.08)\% $, if the vector form
   factor of the Heavy Flavor Averaging Group is used. $\BDTN$ is
   competitive with $\BTNp$ in the search for effects of charged Higgs
   bosons. Especially sensitive to the latter is the differential
   distribution in the decay chain $\bar{B}\to
   D\bar{\nu}_{\tau}\tau^-[\to\pi^-\nu_{\tau}]$.
 </hidden>
|**Ulrich Nierste**  | 
|**      Talk given at 2nd International Workshop on Theory, Phenomenology and Experiments in Heavy Flavor Physics, Capri, Italy, 16-18 Jun 2008. To be published in the proceedings **  |
| {{preprints:2008:ttp08-33.pdf|PDF}} {{preprints:2008:ttp08-33.ps|PostScript}} [[http://arxiv.org/abs/0807.3733|arXiv]]   |
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