A full angular-decay calculation shows that Belle II can distinguish a right-handed neutrino from the Standard Model by the shape of q² and pion-angle distributions in B→D*τX decays.
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Introduces a reconstructible angular distribution for B to D* tau nu decays via tau to lepton chain to extract new physics parameters, projecting 5-6% sensitivities from simulation and lattice form factors.
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Massive right-handed neutrinos in $\bar{B} \to D^* \tau \bar X$ decay
A full angular-decay calculation shows that Belle II can distinguish a right-handed neutrino from the Standard Model by the shape of q² and pion-angle distributions in B→D*τX decays.
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New physics searches via angular distributions of $ \bar{B} \to D^* (\to D \pi) \tau (\to \ell \nu_\tau \bar{\nu}_\ell) \bar{\nu}_\tau$ decays
Introduces a reconstructible angular distribution for B to D* tau nu decays via tau to lepton chain to extract new physics parameters, projecting 5-6% sensitivities from simulation and lattice form factors.