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Branching structure of QCD jets: new jet observables for quark-gluon discrimination

I have explored the fractal nature of hadronic jets and the potential use of fractal dimension in jet substructure physics. A more sophisticated set of parameters, named Branching Logarithmic Fit (BLF) parameters, has subsequently been developed to describe the fractal and corrections-to-fractal beh...

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Detalles Bibliográficos
Autor principal: Davighi, Joseph (CERN)
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:http://cds.cern.ch/record/1757244
Descripción
Sumario:I have explored the fractal nature of hadronic jets and the potential use of fractal dimension in jet substructure physics. A more sophisticated set of parameters, named Branching Logarithmic Fit (BLF) parameters, has subsequently been developed to describe the fractal and corrections-to-fractal behavior due to QCD running in the perturbative regime. Theoretical motivation is given for these parameters, which have then been applied to the problem of quark/gluon discrimination. The BLF parameters are individually discriminating and only weakly correlated to variables currently used in quark/gluon discrimination. Consequently, their inclusion should improve discrimination, and evidence is presented for this at the generator level