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T: Fachverband Teilchenphysik

T 56: Flavour Physics 4

T 56.5: Vortrag

Mittwoch, 23. März 2022, 17:15–17:30, T-H15

NLO QCD corrections to inclusive b → c ℓ ν decay spectra up to 1/m_b³ — Thomas Mannel, •Daniel Moreno, and Alexei A. Pivovarov — Center for Particle Physics Siegen, Theoretische Physik 1, Universität Siegen, 57068 Siegen, Germany

We present analytical results for higher order corrections to the decay spectra of inclusive semileptonic heavy hadron weak decays, using the heavy quark expansion (HQE). We describe the analytical computation of the spectrum of the leptonic invariant mass for B → X_c ℓ ν up to terms of order 1/m_b³ within the HQE at next-to-leading order (NLO) in α_s. The full dependence of the differential rate on the mass of the final-state quark is taken into account. We discuss the implications of our results for the precision determination of the CKM matrix element |V_cb|.