New methods of evaluation of the flavor composition in e+ e- annihilation by double hemisphere tagging at LEP / SLC energies

Billoir, C.;de la Vaissiere, C.;Castillo, V.;Cortina Gil, Eduardo;Salt, J.;et.al.
(1995) Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment — Vol. 360, n° 3, p. 532-558 (1995)

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Authors
  • Billoir, C.
    Author
  • de la Vaissiere, C.
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  • Castillo, V.
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  • Cortina Gil, Eduardoorcid-logoUCLouvain
    Author
  • Salt, J.
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  • et. al.
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Abstract
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 View the MathML source branching ratio using a standard simulation of a LEP/SLC experiment.
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Billoir, C., de la Vaissiere, C., Castillo, V., Cortina Gil, E., Higon, E., Martinez-Vidal, Salt, J., & et al. (1995). New methods of evaluation of the flavor composition in e+ e- 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. https://doi.org/10.1016/0168-9002(95)00115-8 (Original work published 1995)