A new model-independent method of determining || and |V|

1996/05/31 by C. S. Kim, C.S. Kim
Physics and Astronomy · #Cabibbo–Kobayashi–Maskawa matrix #Hadron #Invariant (physics) #Invariant mass #Particle physics theoretical and experimental studies #Perturbative QCD #Phase space #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #Quantum chromodynamics #Quark #Semileptonic decay #hep-ph

paper · pdf · doi:10.1016/s0370-2693(97)01203-3

published as Phys.Lett.B414:347-353,1997 · 13 pages, no figures, ordinary LaTeX. Many improvements. To be published at Phys. Lett. B

arxiv created 1997/08/22 · openalex publication_date 1997/11/01 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In order to determine the ratio of CKM matrix elements |V_ub/V_cb| (and |V_ub|), we propose a new model-independent method based on the heavy quark effective theory, which is theoretically described by the phase space factor and the well-known perturbative QCD correction only. In the forthcoming asymmetric B-experiments with microvertex detectors, BABAR and BELLE, the total separation of b --> u semileptonic decays from the dominant b --> c semileptonic decays would be experimentally viable. We explore the possible experimental option: the measurement of inclusive hadronic invariant mass distributions. We also clarify the relevant experimental backgrounds.

Citations

• Semileptonic decays B → (π, ϱ)eν in relativistic quark model
• Dependence of |V ub/Vcb| on Fermi momentump F in ACCMM model
• Average kinetic energy of heavy quark and virial theorem
• B meson form factors and exclusive decays
• Resummation of running coupling effects in semileptonicBmeson decays and extraction of ‖Vcb‖
• Lattice study of the decay model-independent determination of |Vub |
• QCD-based interpretation of the lepton spectrum in inclusiveB¯→Xuℓν¯decays
• Extracting |Vbc|, mc and mb from inclusive D and B decays
• Inclusive semileptonicBand polarizedΛbdecays from QCD
• Weak decay form factors of heavy pseudoscalar mesons within a light-front constituent quark model
• CP-Violation in the Renormalizable Theory of Weak Interaction