New methods of evaluation of the flavour composition in annihilation by double hemisphere tagging at LEP/SLC energies
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New methods of evaluation of the flavour composition in annihilation by double hemisphere tagging at LEP/SLC energies

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New methods of evaluation of the flavour composition in annihilation by double hemisphere tagging at LEP/SLC energies

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Billoir, P.; Vaissiere, Ch. de la; Castillo Giménez, María Victoria Perfil; Cortina Gil, Eduardo; Higón Rodríguez, Emilio Perfil; Martínez Vidal, Fernando Perfil; Salt Cairols, José Perfil
This document is a artículoDate1995

Este documento está disponible también en : http://dx.doi.org/10.1016/0168-9002(95)00115-8

Este documento está disponible también en : http://hdl.handle.net/10550/34580
Two new methods are proposed to extract the flavour contents of the events produced at LEP/SLC, together with the classification matrix of a tagging by hemispheres. By utilising the tagging obtained in both hemispheres, the efficiencies, backgrounds and flavour compositions are directly obtained by fitting the data. A minimal dependence on modelling and a consistent treatment of systematic errors are achieved by applying these methods. The choice of the tagging algorithm is irrelevant in the methods, provided that similar efficiencies are reached. As an example, a multivariate analysis technique combining the tracking information given by a microvertex detector has been applied to extract the Z → b overlineb branching ratio using a standard simulation of a LEP/SLC experiment.

    Billoir, P. Vaissiere, Ch. de la Castillo Giménez, María Victoria Cortina Gil, Eduardo Higón Rodríguez, Emilio Martínez Vidal, Fernando Salt Cairols, José 1995 New methods of evaluation of the flavour composition in annihilation by double hemisphere tagging at LEP/SLC energies Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment 360 3 532 558
http://dx.doi.org/10.1016/0168-9002(95)00115-8

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