The B0-B̅ 0 oscillation frequency has been measured with a sample of 23×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives Δmd = 0.493±0.012(stat)±0.009(syst)ps-1.
Measurement of the B0-B̅ 0 Oscillation Frequency with Inclusive Dilepton Events
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;SIMI, GABRIELE;
2002
Abstract
The B0-B̅ 0 oscillation frequency has been measured with a sample of 23×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives Δmd = 0.493±0.012(stat)±0.009(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.
