Chronology of Milestone Events in Particle Physics - BEBEK 1981
Chronology of Milestone Events in Particle Physics

BEBEK 1981

CLEO Collaboration; Bebek, C. et al.
Evidence for New Flavor Production at the (4S)
Phys. Rev. Lett. 46 (1981) 84;

Abstracts
An enhancement has been observed in the inclusive cross section for direct single electrons produced in e+ e annihilations at the (4S). This is interpreted as evidence for a new weakly decaying particle, the B meson. A branching ratio for B X e± of [13 3 ( 3)]%, is inferred, where the first set of errors is statistical and the estimated systematic error is enclosed in parentheses.

Accelerator CESR Detectors CLEO

Related references
See also
D. Andrews et al., Phys. Rev. Lett. 45 (1980) 219;
M. Kobayashi and T. Maskawa, Progr. of Theor. Phys. 49 (1973) 652;
K. Chadwick et al., Phys. Rev. Lett. 46 (1981) 88;
G. Finocchiaro et al., Phys. Rev. Lett. 45 (1980) 222;

Reactions
  e+ e 5charged X 10.378-10.598 GeV (Ecm) cs
  e+ e e± X 10.378-10.598 GeV (Ecm) cs, p
  e+ e (4S) 10.378-10.598 GeV (Ecm)
  (4S) B(unspec) (unspec)
  B(unspec) e X

Particles studied
  (4S) dec, pw
  B(unspec) ex, dec, pw

Record comments
First evidence for the B meson.
    
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