Transverse Spin Polarization of $\tau^-$ in ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ and Charged Higgs Boson

Dae Sung Hwang

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arXiv · 1504.06933

Transverse Spin Polarization of $\tau^-$ in ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ and Charged Higgs Boson

Dae Sung Hwang

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Abstract

The spin of the $\tau$ lepton in the semiletonic process ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ can be polarized in the direction which is normal to the reaction plane, if the charged Higgs boson exists and its coupling to quarks has a complex phase. We calculate this transverse polarization of the $\tau$ lepton by using the experimentally measured $B$ to $D$ transition form factors.

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Dae Sung Hwang. 2015-04-27. Transverse Spin Polarization of $\tau^-$ in ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ and Charged Higgs Boson. https://arxiv.org/abs/1504.06933

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