Inclusive Semileptonic B Decays at BaBar and Extraction of HQE parameters
H.U. Flaecher (for the BABAR Collaboration)
TL;DR
This paper reports measurements of moments of hadronic mass and electron energy spectra in semileptonic B decays from BaBar data, enabling extraction of CKM matrix elements and heavy-quark parameters.
Contribution
It provides new measurements of spectral moments and extracts key parameters like |V_cb| and HQE parameters using these moments, advancing understanding of B decays.
Findings
Measured moments of hadronic mass distribution in B decays.
Measured moments of electron energy spectrum in B decays.
Extracted |V_cb| and heavy-quark parameters from the data.
Abstract
A measurement of the first four moments of the hadronic mass distribution in B->Xc lv decays is presented for minimum lepton momenta varying between 0.9 and 1.6 GeV, using data recorded with the BaBar detector. Furthermore, a measurement of the inclusive electron energy spectrum for semileptonic B decays together with a measurement of its first, second and third moments for minimum electron energies between 0.6 and 1.5 GeV is reported. We determine the inclusive B->Xc lv branching fraction, B_clv, the CKM matrix element |V_cb|, and other heavy-quark parameters from a simultaneous fit to the measured moments.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Detector Development and Performance · Quantum Chromodynamics and Particle Interactions