B Meson Decays with τ Leptons in the Final State

We present measurements of B meson decays with τ leptons in the final state. These decays, while experimentally more challenging than those involving light leptons, provide enhanced sensitivity to physics beyond the Standard Model due to the large τ mass. We present measurements of the branching fractions of and , as well as searches for the forbidden decays B0→ℓ±τ∓ and B−→K−τ±μ∓. These measurements are based on several hundred million events recorded with the BaBar detector at the PEP-II asymmetric-energy collider.