Journal article
Measurement of
G Abbiendi, K Ackerstaff, PF Akesson, G Alexander, J Allison, KJ Anderson, S Arcelli, S Asai, SF Ashby, D Axen, G Azuelos, I Bailey, AH Ball, E Barberio, RJ Barlow, JR Batley, S Baumann, T Behnke, KW Bell, G Bella Show all
Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | ELSEVIER | Published : 2000
Abstract
The magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V(cb) has been measured using B̄0 → D*+l-ν̄ decays recorded on the Z0 peak using the OPAL detector at LEP. The D*+ → D0π+ decays were reconstructed both in the particular decay modes D0 → K-π+ and D0 → K-π+π0 and via an inclusive technique. The product of |V(cb)| and the decay form factor of the B̄0 → D*+l-ν̄ transition at zero recoil F(1) was measured to be F(1)|V(cb)| = (37.1 ± 1.0 ± 2.0) x 10-3, where the uncertainties are statistical and systematic respectively. By using Heavy Quark Effective Theory calculations for F(1), a value of |V(cb)| = (40.7 ± 1.1 ± 2.2 ± 1.6) x 10-3 was obtained, where the third error is due to theoret..
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