Observation of {pi} - B meson charge-flavor correlations and measurement of time dependent B{sup 0} Bbar{sup 0} mixing in p{bar p} collisions
We present evidence for charge correlations of {ital B} mesons with charged particles produced in {ital p{anti p}} Collisions at 1.8 TeV. Such correlations are expected to arise from pious produced in the fragmentation chain and from {ital B}{sup **} decays. We measure the efficiency and purity of this flavor tagging method for both charged and neutral {ital B} mesons. We apply these correlations to {ital B} mesons reconstructed in 110 pb{sup -1} of data collected with the CDF detector at the Fermilab Tevatron Collider. {ital B} mesons are either partially reconstructed, using the semileptonic decays {ital B}{sup 0} {yields} {ital l}{sup +}{ital D}{sup (*)-}{ital X} and {ital B}{sup +} {yields} {ital l}{sup +}{ital {anti D}X}, or fully reconstructed, using the decay modes {ital B}{sup 0} {yields} {ital J/{Psi}K{sup *0}} and {ital B}{sup +} {yields} {ital J/{Psi}K{sup +}}. Application of this new flavor tagging method to neutral {ital B} mesons yields a measurement of the frequency of the oscillation {ital B}{sup 0} {yields} {ital {anti B}}{sup 0}. We obtain {Delta}{ital m{sub d}} = 0.446 {+-} 0.057{sup +0.034}{sub -0.031}.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Istituto Nazionale di Fisica Nucleare, Rome (Italy); Ministry of Education, Science and Culture (Japan); Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada); National Science Council, Taipei (Taiwan, Province of China); Sloan (Alfred P.) Foundation, New York, NY (United States)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 435054
- Report Number(s):
- FNAL/C-96/175-E; CONF-960765-34; ON: DE96050565; TRN: 97:004316
- Resource Relation:
- Conference: 28. international conference on high-energy physics, Warsaw (Poland), 25-31 Jul 1996; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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