Supersymmetric jets from z-boson decay and radiative decays of heavy quarkonium
An analysis of the jet structure in the final state of the supersymmetric process e/sup +/e/sup -/ ..-->.. anti-qq ..-->.. qq..gamma gamma.. is presented. For scalar quark production, as for supersymmetric events in general, the signature which will enable supersymmetry to be discovered in future colliders is missing energy/momentum combined with certain characteristic jet angular and energy distributions. The squark production and decay process at the parton level and a Monte Carlo simulation of the fragmentation of the quarks into jets of hadrons is done. In the second part of the thesis, two-body radiative decays of quarkonium states O ..-->.. ..gamma.. + delta are examined in order to study the effects of the spin of the delta on decay widths; delta stands for any elementary particle or resonance. Using effective delta couplings in a calculation which goes beyond the Wilczek approximation, the author finds that in all cases examined, J/sub delta/ = 0/sup +/-/, 1/sup +/, 2/sup +/-/, spin has little effect on the ratio Gamma(O(2S) ..-->.. ..gamma.. + delta)/O(1S) ..-->.. ..gamma.. + delta) except for delta masses close to the phase space limit.
- Research Organization:
- Illinois Univ., Urbana (USA)
- OSTI ID:
- 6632927
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
QUARKONIUM
RADIATIVE DECAY
Z NEUTRAL BOSONS
WEAK HADRONIC DECAY
BRANCHING RATIO
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
HADRONS
JET MODEL
MONTE CARLO METHOD
MULTIPLE PRODUCTION
SUPERSYMMETRY
BOSONS
DECAY
ELEMENTARY PARTICLES
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
SYMMETRY
WEAK PARTICLE DECAY
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties