• Corpus ID: 118490451

Probing the photon polarization in $B \to K^*\gamma$ with conversion

  title={Probing the photon polarization in \$B \to K^*\gamma\$ with conversion},
  author={Fady Bishara and Dean J. Robinson},
  journal={arXiv: High Energy Physics - Phenomenology},
We re-examine the possibility to measure the photon polarization in $B \to K^*\gamma$ decays, via decays in which the photon subsequently undergoes nuclear conversion to a lepton pair. We obtain compact expressions for the full decay-plus-conversion amplitude. With these results we show that interference between the $B \to (K^*\to K\pi)\gamma$ decay and the $\gamma N \to \ell^+\ell^-N$ conversion permits both the ratio and relative weak phase between the left- and right-handed photon amplitudes… 
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