Observation of B/emph> production in e+e- interactions above the b-flavor threshold
We have observed production of monochromatic low-energy photons in e+e- interactions between 10.6 and 11.2 GeV/c2. We show that this signal is associated with the production of b-flavored meson pairs, and interpret it as due to the decay B*→B+γ. This is the first experimental evidence for the existence of vector bū or bd̄ bound states. We determine the mass difference of the vector and pseudo- scalar states, M(B*)-M(B), to be 52±2±4 MeV. © 1985 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Han, K., Klopfenstein, C., Mageras, G., Dietl, H., Eigen, G., Fonseca, V., Franzini, P., Horstkotte, J., Imlay, R., Lee-Franzini, J., Levman, G., Lorenz, E., Lovelock, D., Metcalf, W., Romero, L., Schamberger, R., Son, D., Sreedhar, V., Tuts, P., Youssef, S., & Zhao, T. (1985). Observation of B/emph> production in e+e- interactions above the b-flavor threshold. Physical Review Letters, 55 (1), 36-39. https://doi.org/10.1103/PhysRevLett.55.36