The time dependence of B(d)0-B(d)0BAR oscillations has been observed using events with a D*, decaying into a D0pi+, and a lepton in opposite hemispheres. The time dependence of the oscillations is derived from the displacement of the D0 vertex and the D*-lepton charge correlation. From a fit for the oscillation frequency the mass difference of the B(d)0 states is measured: DELTAm = [3.44(-0.70)+0.65(stat.)-0.20(+0.26)(syst.)] x 10(-4) eV/c2. RI ANTONELLI, ANTONELLA/C-6238-2011; Buttar, Craig/D-3706-2011; Stahl, Achim/E-8846-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012
OBSERVATION OF THE TIME-DEPENDENCE OF B(D)O-(B(D)O)BAR MIXING
ROLANDI, LUIGI;LIGABUE, FRANCO;LUSIANI, Alberto;
1993
Abstract
The time dependence of B(d)0-B(d)0BAR oscillations has been observed using events with a D*, decaying into a D0pi+, and a lepton in opposite hemispheres. The time dependence of the oscillations is derived from the displacement of the D0 vertex and the D*-lepton charge correlation. From a fit for the oscillation frequency the mass difference of the B(d)0 states is measured: DELTAm = [3.44(-0.70)+0.65(stat.)-0.20(+0.26)(syst.)] x 10(-4) eV/c2. RI ANTONELLI, ANTONELLA/C-6238-2011; Buttar, Craig/D-3706-2011; Stahl, Achim/E-8846-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
