Communication Dans Un Congrès Année : 2017

A Monte Carlo code for the fragmentation of polarized quarks

A. Kerbizi
  • Fonction : Auteur
Z. Belghobsi
  • Fonction : Auteur
F. Bradamante
  • Fonction : Auteur
A. Martin
  • Fonction : Auteur

Résumé

We describe a Monte Carlo code for the fragmentation of polarized quarks into pseudoscalar mesons. The quark jet is generated by iteration of the splitting q → h + q′ where q and q′ indicate quarks and h a hadron. The splitting function describing the energy sharing between q′ and h is calculated on the basis of the Symmetric Lund Model where the quark spin is introduced through spin matrices as foreseen in the 3 P 0 mechanism. A complex mass parameter is introduced for the parametrisation of the Collins effect. The results for the Collins analysing power and the comparison with the Collins asymmetries measured by the COMPASS collaboration are presented. For the first time preliminary results on the simulated azimuthal asymmetry due to the Boer-Mulders function are also given.

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Dates et versions

hal-01703772 , version 1 (20-11-2018)

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A. Kerbizi, X. Artru, Z. Belghobsi, F. Bradamante, A. Martin. A Monte Carlo code for the fragmentation of polarized quarks. 17th Workshop on High Energy Spin Physics, Sep 2017, Dubna, Russia. pp.012051, ⟨10.1088/1742-6596/938/1/012051⟩. ⟨hal-01703772⟩
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