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Title: Measurement of the {ital B}{sup 0}- {bar {ital B}}{sup 0} Oscillation Frequency Using {ital {pi}}-{ital B} Meson Charge-Flavor Correlations in {ital p}{ovr {ital p}} Collisions at {radical}({ital s}) =1.8 TeV

We present a measurement of the B{sup 0}{leftrightarrow}{bar B}{sup 0} oscillation frequency using a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in p{bar p} collisions at {radical}(s)=1.8 TeV. Such correlations are expected to arise from b quark hadronization and from B{sup {asterisk}{asterisk}} decays. We partially reconstruct B mesons using the semileptonic decays B{sup 0}{r_arrow}l{sup +}D{sup ({asterisk}){minus}} X and B{sup +}{r_arrow}l{sup +}{bar D}{sup 0}X. From the oscillation frequency, we obtain the mass difference between the two B{sup 0} mass eigenstates, {Delta}m{sub d}=0.471{sup +0.078}{sub {minus}0.068} (stat){plus_minus}0.034(syst ){h_bar} ps{sup {minus}1}, and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons. {copyright} {ital 1998} {ital The American Physical Society}
Authors:
; ; ; ; ;  [1] ; ; ; ; ;  [2] ; ; ; ; ;  [3] ; ; ;  [4] ; more »; ; ; ; ;  [5] ; ; ; ; ; ; ;  [6] ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [7] ; ; ;  [8] ; ; ; ; ; ; ; ;  [9] ; ; ;  [10] ; ; ; ; ; ; ;  [11] « less
  1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. Istituto Nazionale di Fisica Nucleare, Univ. of Bologna, I-40127 Bologna (Italy)
  3. Brandeis Univ., Waltham, Massachusetts 02254 (United States)
  4. University of California at Los Angeles, Los Angeles, California 90024 (United States)
  5. Univ. of Chicago, Chicago, Illinois 60637 (United States)
  6. Duke University, Durham, North Carolina 27708 (United States)
  7. Fermi National Accelerator Lab., Batavia, Illinois 60510 (United States)
  8. Univ. of Florida, Gainesville, Florida 32611 (United States)
  9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
  10. University of Geneva, CH-1211 Geneva 4 (Switzerland)
  11. Harvard Univ. (United States)
Publication Date:
OSTI Identifier:
615221
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 80; Journal Issue: 10; Other Information: PBD: Mar 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; PROTON-ANTIPROTON INTERACTIONS; CHARGES; FLAVOR; CORRELATIONS; PIONS; B NEUTRAL MESONS; ANTI-B NEUTRAL MESONS; TEV RANGE; OSCILLATIONS; PARTICLE PRODUCTION; QUARKS; SEMILEPTONIC DECAY; MASS DIFFERENCE; EIGENSTATES