[SEMINARI]: Dr. Scopetta: Parton distributions in a constituent quark scenario

[Arcadi Santamaria]

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                              S E M I N A R I

        [Image]        Departament de Física Teòrica         [Image]
                  Universitat de València - IFIC (UV-CSIC)
                      46100 Burjassot (València) Spain

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               Parton distributions in a constituent quark scenario

                             Dr. Sergio Scopetta

                                (ECT, Trento)

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                     Aula de Seminaris de Física Teòrica
                  Thursday 23 of March of 2000 at 11:30 AM
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                                    Resum

     A simple picture of the constituent quark as a composite system of
point-like partons is used to construct the unpolarized and polarized parton
      distributions by a convolution between constituent quark momentum
  distributions and constituent quark structure functions. We achieve good
 agreement with experiments in the unpolarized, as well as, in the polarized
     case. When our results are compared with similar calculations using
  non-composite constituent quarks, the accord with the experiments of the
 present scheme is impressive. We conclude that DIS data are consistent with
 a low energy scenario dominated by composite constituents of the nucleon.

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