We present a measurement of the B(0) <-> (B) over bar(0) oscillation frequency a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in collisions at root s = 1.8 TeV. Such correlations are expected to arise from b quark hadronization and from B** decays. We partially reconstruct B mesons using the semileptonic decays B(0) --> l(+) D((*)-)X and B(+) --> l(+)(D) over bar(0)X. From the oscillation frequency, we obtain the mass difference between the two B(0) mass eigenstates, Delta m(d) = 0.471(+0.068)(+0.078)(stat) +/- 0.034(syst)(h) over bar ps(-1), and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.
Measurement of theB0−B¯0Oscillation Frequency Usingπ−BMeson Charge-Flavor Correlations inpp¯Collisions ats=1.8TeV
DONATI, SIMONE;PUNZI, GIOVANNI;
1998-01-01
Abstract
We present a measurement of the B(0) <-> (B) over bar(0) oscillation frequency a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in collisions at root s = 1.8 TeV. Such correlations are expected to arise from b quark hadronization and from B** decays. We partially reconstruct B mesons using the semileptonic decays B(0) --> l(+) D((*)-)X and B(+) --> l(+)(D) over bar(0)X. From the oscillation frequency, we obtain the mass difference between the two B(0) mass eigenstates, Delta m(d) = 0.471(+0.068)(+0.078)(stat) +/- 0.034(syst)(h) over bar ps(-1), and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.