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AbstractAbstract
[en] This work was dedicated to the search for pairs of first generation scalar leptoquarks one decaying into ej and the other into νj. The experimental data used (175,6 pb-1) is that collected during the run-II of the D0 experiment at Tevatron. The production cross-sections of scalar leptoquark pairs has been assessed at a 95% confidence level for different values of the mass. The comparison of these values with theoretical values has led us to state that for a branching ratio β = 0.5 the existence of scalar leptoquarks with a mass lower than 194 GeV is not possible. For a branching ratio β = 1, some scalar leptoquarks with mass < 238 GeV may be excluded while for β = 0.5, some scalar leptoquarks with mass < 213 GeV are excluded
Original Title
Recherche de leptoquarks scalaires de premiere generation aupres de D0
Primary Subject
Source
May 2004; 154 p; 72 refs.; Also available from BU de l'Universite de la Mediterranee. Bibliotheque Sciences-Luminy Case 904, 13288 - Marseille Cedex 9 (France); These physique mathematique, physique des particules et modelisation
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
ACCELERATORS, BARYON-BARYON INTERACTIONS, BOSONS, CYCLIC ACCELERATORS, ELEMENTARY PARTICLES, FIELD THEORIES, GRAND UNIFIED THEORY, HADRON-HADRON INTERACTIONS, INTERACTIONS, INTERMEDIATE BOSONS, INTERMEDIATE VECTOR BOSONS, MATHEMATICAL MODELS, MEASURING INSTRUMENTS, NUCLEON-ANTINUCLEON INTERACTIONS, PARTICLE INTERACTIONS, PARTICLE MODELS, QUANTUM FIELD THEORY, RADIATION DETECTORS, SYNCHROTRONS, UNIFIED GAUGE MODELS
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