We present a simultaneous measurement of the B̅ 0 lifetime τB0 and B0B̅ 0 oscillation frequency Δmd. We use a sample of about 50 000 partially reconstructed B̅ 0→D*+ℓ-ν̅ ℓ 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.
Measurement of the (B)over-bar lifetime and the B-0(B)over-bar(0) oscillation frequency using partially reconstructed (B)over-bar(0)-> D*+ l-(v)over-bar(l) decays
SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2006
Abstract
We present a simultaneous measurement of the B̅ 0 lifetime τB0 and B0B̅ 0 oscillation frequency Δmd. We use a sample of about 50 000 partially reconstructed B̅ 0→D*+ℓ-ν̅ ℓ 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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
