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Bc semileptonic decays as a probe of lepton flavor universality

We discuss semileptonic Bc decays within the Standard Model (SM) and beyond and test the lepton flavour universality by examining various angular observables in these decays. In light of prospects for measurements of Bc→D(∗)lν decays in the upcoming Upgrade II of the LHC, we show that by using calculated Bc → D(∗) form factors a competitive extraction of the |Vub | CKM matrix element from the B → Dμν decay might be possible.

Bc decays ; semileptonic decays ; lepton flavour universality

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