Observation of the Bc Meson at CDF
- Fermilab
We report on the observation of bottom-charm mesons via the decay mode B{sub c}{sup {+-}} {yields} J/{psi}l{sup {+-}}{nu} in 1.8 TeV p{anti p} collisions using the CDF detector at the Fermilab Tevatron. A fit of background and signal contributions to the J/{psi}l mass distribution yielded 20.4{sup +6.2}{sub -5.5} events from B{sub c} mesons. We measured the B{sub c}{sup +} mass to be 6.40{+-}0.39(stat.){+-}0.13(syst.)GeV/c and the B{sub c}{sup +}lifetime to be 0:46{sup +0.18}{sub -0.16}(stat.){+-} 0.03(syst.)ps. The measured production cross section times branching ratio for B{sub c}{sup +}{yields}J/{psi}l{sup +}{nu} relative to that for B{sup +}{yields}J/{psi}K{sup +} is 0.132{sup +0.041}{sub -0.037}(stat.){+-}0.031(syst.){sup +0.032}{sub -0.020}(lifetime).
- Research Organization:
- Fermi National Accelerator Laboratory, Batavia, IL
- Sponsoring Organization:
- USDOE Office of Energy Research (ER)
- OSTI ID:
- 2523
- Report Number(s):
- FERMILAB-Conf-98/371-E; ON: DE00002523
- Country of Publication:
- United States
- Language:
- English
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