Exclusive Heavy-Meson Production And The Z0 Width
PHYSICS LETTERS B(1982)
摘要
We calculate in lowest order QCD perturbation theory the production from Z 0 decay and e + e − annihilation of two mesons, each containing a heavy quark. With reasonable assumptions about the vertex functions that couple mesons to quarks, we find that the rates for these final states are strongly enhanced. Present-day knowledge even allows these rates to be so large that the Z 0 may be too wide to be detected in p p collisions, with disastrous consequences also for event rates at e + e − colliders.
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