https://diposit.ub.edu/items/8cb795b7-3872-437d-9b74-5a34c8cd74a4
Test of lepton flavor universality by the measurement of the B0 →d∗-τ+ντ branching fraction using...
The ratio of branching fractions R(D∗−) ≡ B(B0 → D∗−τ +ντ )/B(B0 → D∗−µ +νµ) is measured using a data sample of proton-proton collisions collected with the...
lepton flavor universalityby thebranching fractiontestmeasurement