# Relations between b → cτν decay modes in scalar models

@article{Schacht2020RelationsBB, title={Relations between b → c$\tau$$\nu$ decay modes in scalar models}, author={Stefan Schacht and Amarjit Soni}, journal={Journal of High Energy Physics}, year={2020}, volume={2020} }

As a consequence of the Ward identity for hadronic matrix elements, we find relations between the differential decay rates of semileptonic decay modes with the underlying quark-level transition b → cτν, which are valid in scalar models. The decay-mode dependent scalar form factor is the only necessary theoretical ingredient for the relations. Otherwise, they combine measurable decay rates as a function of the invariant mass-squared of the lepton pair q2 in such a way that a universal decay-mode…

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