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Title: A study of energy-energy correlations in charged tracks from hadronic decays of the Z0 at 91.2 Gev
Author: Boyle, Owen
ISNI:       0000 0004 2740 0864
Awarding Body: University of Glasgow
Current Institution: University of Glasgow
Date of Award: 1992
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The energy-energy correlations in charged tracks from the hadronic decays of the Z0 were studied at energies around the Z0-pole of 91.2 Gev. From a comparison with order-alpha-s-squared analytical formulae, the strong coupling constant, alpha-s, was measured. The results obtained were From the EEC: 0.132 +/- 0.006 +0.012/-0.009 From the AEEC: 0.109 +/- 0.007 +0.011/-0.007 where the first error is experimental and the second is due to scale uncertainty. The EEC was also studied for particle clusters and compared with a parton-level Monte Carlo simulation using an exact order-alpha-s-squared matrix element formula. From this study, the value of alpha-s obtained was From clustered EEC: 0.111 +0.016/-0.013 An observation of the effects of coherence in b-quark fragmentation was made, leading to evidence in support of the principle of Local Parton-Hadron Duality. An attempt was made to discriminate between samples of quark and gluon jets using the EEC function. No clear conclusion was reached due to limited statistics and the energy mismatch between quark jets and gluon jets.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: QC Physics