Abstract
This paper reports a study of B meson oscillations using hadronic Z0 decays with two identified leptons, and updates a previous publication by including data collected in 1994. Decay times are reconstructed for each of the semileptonic B decays by forming vertices which include the lepton and by estimating the B meson momentum. The mass difference, Δmd, between the two mass eigenstates in the Bd0 system is measured to be 0.430 ± 0.043 -0.030+0.028 ps-1, where the first error is statistical and the second error is systematic. For the Bs0 system, a lower limit of Δms > 2.2 ps-1 is obtained at 95% C.L.
Original language | English |
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Pages (from-to) | 417-423 |
Number of pages | 7 |
Journal | Zeitschrift fur Physik C-Particles and Fields |
Volume | 76 |
Issue number | 3 |
DOIs | |
State | Published - Nov 1997 |
Externally published | Yes |
Funding
Acknowledgements. We particularly wish to thank the SL Division for the efficient operation of the LEP accelerator and for their continuing close co-operation with our experimental group. We thank our colleagues from CEA, DAPNIA/SPP, CE-Saclay for their efforts over the years on the time-of-flight and trigger systems which we continue to use. In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK, Natural Sciences and Engineering Research Council, Canada, Israel Science Foundation, administered by the Israel Academy of Science and Humanities, Minerva Gesellschaft, Benoziyo Center for High Energy Physics, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Mon-busho International Science Research Program, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Matière du Commissariat à l’Energie Atomique, France, Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, Germany, National Research Council of Canada, Hungarian Foundation for Scientific Research, OTKA T-016660, T023793 and OTKA F-023259.
Funders | Funder number |
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Direction des Sciences de la Matière du Commissariat à l’Energie Atomique | |
German Israeli Bi-national Science Foundation | |
Hungarian Foundation for Scientific Research | OTKA T-016660, OTKA F-023259, T023793 |
Minerva Gesellschaft | |
National Science Foundation | |
U.S. Department of Energy | |
Natural Sciences and Engineering Research Council of Canada | |
National Research Council Canada | |
Ministry of Education, Culture, Sports, Science and Technology | |
Bundesministerium für Bildung und Forschung | |
Israel Academy of Sciences and Humanities | |
Israel Science Foundation |