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arXiv · 1403.5892

CP violation in $B\to Dτν_τ$ using multi-pion tau decays

Kaoru Hagiwara·Mihoko M. Nojiri·Yasuhito Sakaki
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Abstract

Present experimental datas have shown a 3.8$σ$ level discrepancy with the standard model in $\overline{B}\to D^{(*)}τ\barν_τ$. Some new physics models have been considered to explain this discrepancy possibly with new source of the CP violation. In this paper, we construct CP violating observables by using multi-pion decays in $B\to Dτν_τ$, and estimate sensitivity of these observables to generic CP violating operators. We also discuss possibilities of CP violation in leptoquark models and in 2HDM of type-III.

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Kaoru Hagiwara, Mihoko M. Nojiri, Yasuhito Sakaki. 2014-03-24. CP violation in $B\to Dτν_τ$ using multi-pion tau decays. https://doi.org/10.1103/physrevd.89.094009

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