Measurement of B-0-(B)over-bar(0) flavor oscillations using jet-charge andlepton flavor tagging in p(p)over-bar collisions at root s=1.8 TeV - art. no. 072003
F. Abe et al., Measurement of B-0-(B)over-bar(0) flavor oscillations using jet-charge andlepton flavor tagging in p(p)over-bar collisions at root s=1.8 TeV - art. no. 072003, PHYS REV D, 6007(7), 1999, pp. 2003
We present a measurement of the mass difference Delta m(d) for the B-0 meso
n and the statistical power of the b flavor tagging methods used. The measu
rement uses 90 pb(-1) of data from <p(p)over bar> collisions at root s=1.8
TeV collected with the CDF detector. An inclusive lepton trigger is used to
collect a large sample of B hadron semileptonic decays. The mass differenc
e Delta m(d) is determined from the proper time dependence of the fraction
of B hadrons that undergo flavor oscillations. The flavor at decay is infer
red from the charge of the lepton from semileptonic B decay. The initial fl
avor is inferred by determining the flavor of the other B hadron produced i
n the collision, either from its semileptonic decay (soft-lepton tag) or fr
om its jet charge. The measurement yields Delta m(d)=(0.500+/-0.052+/-0.043
)(h) over bar ps(-1), where the first uncertainty is statistical and the se
cond uncertainty is systematic. The statistical powers (epsilon D-2) of the
soft-lepton and jet-charge flavor taggers are (0.91+/-0.10 +/-0.11)% and (
0.78+/-0.12+/-0.08)%, respectively. [S0556-2821(99)05417-X].