FERMILAB-Conf-99/227-E CDF B spectroscopy results: B ∗ ∗ and B + c
نویسنده
چکیده
We report on two spectroscopy results from CDF. First, we observe the orbitally excited B∗∗ mesons in B → lDX events. We find 28 ± 6 ± 3% of light B mesons produced are B∗∗ states. A collective mass fit results in a B1 mass of 5.71± 0.02 GeV/c. Secondly, we observe 20.4 −5.5 decays of B + c →J/ψl X , with a 6.40±0.39±0.13GeV/c mass and 0.46 −0.16 ± 0.03 ps lifetime. The production rate is in reasonable accordance with expectations.
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