B Cross-Section and b* - B Mass Difference

Using the CLEO II detector, we have measured the B^* meson production cross section as a function of center of mass energy from 10.61 GeV to 10.70 GeV. We find that the production cross section of B^* mesons is 0.162 +/- 0.025 +/- 0.014 nb at 10.63 GeV. This cross section can only be attributed to B |{B}^* production. We report the first observation of B^*| {B}^* production with a cross section of 0.234 +/- 0.044 +/- 0.019 nb at 10.70 GeV. The B^*, B^*|{B}^* and total b|{b} hadronic cross sections are compared to predictions from potential models. The B^*-B mass difference has been measured to be 45.9 +/- 0.3 +/- 0.6 MeV/c^2, which is consistent with previous measurements.