Observables for the Analysis of Event Shapes in e+e- Annihilation and Other Processes
Abstract
We present a set of rotationally invariant observables which characterizes the "shapes" of events, and is calculable in quantum-chromodynamics perturbation theory for final states consisting of quarks and gluons (G). We include the effects of fragmentation to hadrons in comparing the shapes of events from the processes e+e--->qq̄, e+e--->qq̄G, and e+e--->heavy resonance-->GGG, and from heavy-quark and lepton production. We indicate how our analysis may be extended to deep-elastic lepton-hadron interactions and hadron-hadron collisions involving large transverse momenta.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 1978
- DOI:
- 10.1103/PhysRevLett.41.1581
- Bibcode:
- 1978PhRvL..41.1581F