Measurement of the B̄0 lifetime and the B0B̄0 oscillation frequency using partially reconstructed B̄0→D*+ℓ- ν̄ℓ decays

Measurement of the B̄0 lifetime and the B0B̄0 oscillation frequency using partially reconstructed B̄0→D*+ℓ- ν̄ℓ decays

We present a simultaneous measurement of the B̄0 lifetime τB0 and B0B̄0 oscillation frequency Δmd. We use a sample of about 50000 partially reconstructed B̄0→D*+ℓ-ν̄ℓ decays identified with the BABAR detector at the PEP-II e+e- storage ring at SLAC. The flavor of the other B meson in the event is de...

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Bibliographic Details
Main Authors: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, J, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, J, Qi, N, Rong, G, Wang, P, Zhu, Y, Eigen, G, Ofte, I, Stugu, B, Abrams, G, Battaglia, M, Breon, AB, Brown, D
Format: Journal article
Language:English
Published: 2006
Description
Summary:We present a simultaneous measurement of the B̄0 lifetime τB0 and B0B̄0 oscillation frequency Δmd. We use a sample of about 50000 partially reconstructed B̄0→D*+ℓ-ν̄ℓ decays identified with the BABAR detector at the PEP-II e+e- storage ring at SLAC. The flavor of the other B meson in the event is determined from the charge of another high-momentum lepton. The results are τB0=(1.504±0.013(stat)- 0.013+0.018(syst))ps, Δmd=(0.511±0.007(stat)-0.006+0.007(syst))ps- 1. © 2006 The American Physical Society.

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