Measurement of the $B^0 \overline{B}^0$ oscillation frequency using $\pi B$ meson charge-flavor correlations in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV - INSPIRE

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Measurement of the $B^0 \overline{B}^0$ oscillation frequency using $\pi B$ meson charge-flavor correlations in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

Sep, 1997

17 pages

Published in:

Phys.Rev.Lett. 80 (1998) 2057-2062

e-Print:

hep-ex/9712004 [hep-ex]

DOI:

10.1103/PhysRevLett.80.2057

PDG:

\Delta {\mathit m}_{{{\mathit B}^{0}}}

{\mathit m}_{{{\mathit B}_{{{H}}}^{0}}}-{\mathit m}_{{{\mathit B}_{{{L}}}^{0}}}

Report number:

FERMILAB-PUB-97-312-E,
ANL-HEP-PR-98-107

Experiments:

FNAL-E-0741

View in:

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Abstract:

We present a measurement of the B0 B0-bar oscillation frequency using a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in p p-bar collisions at sqrt{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 B0 -> lepton D(*)- X. and B+ -> lepton D0-bar X$. From the oscillation frequency, we obtain the mass difference between the two B0 mass eigenstates, Delta m_d = 0.471 {+0.078} {-0.068}(stat) +- 0.034 (syst) hbar ps-1, and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.

Note:

16 pages, 2 figures. Submitted to Physical Review Letters. Also available at http://www-cdf.fnal.gov/physics/pub97/cdf4244_lepd_mix_sst_prl.ps Report-no: FERMILAB-PUB-97/312-E

anti-p p: colliding beams
anti-p p: inclusive reaction
B0: hadroproduction
B+: hadroproduction
B0 anti-B0: oscillation
particle identification: flavor
efficiency
correlation: (B pi)
charge correlation: flavor
bottom: hadronization

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