[SEMINARI]: Dr. Kotchelev: Applications of the instantons

[Arcadi Santamaria]

Please note that the seminar is at 12:30
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                              S E M I N A R I

            [Image]    Departament de Física Teòrica     [Image]
                          Universitat de València
                      46100 Burjassot (València) Spain

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                          Applications of the instantons

                              Nikolai Kotchelev

                                   (Dubna)

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                     Aula de Seminaris de Física Teòrica
                    Thursday 18 of June of 1998 at 12:30
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                                    Resum

  We discuss the different manifestations of the specific instanton-induced
   quark-quark and quark-gluon interactions in the particle physics. It is
 shown, for example, that the quark-quark interaction induced by instantons
   leads to the large contribution to the spin-spin mass splitting between
 hadron multiplets. The instantons can contribute also to the deep-inelastic
structure functions. In this case a strong flavor and helicity dependence of
 the instanton-induced quark-quark and quark-gluon interaction leads to the
 large Gottfried and Ellis-Jaffe sum rule violation and allow us to resolve
 the famous "proton spin cricis" . The possible instanton mechanism for the
     explanation of the excess of the DIS events at large Q^2, x in the
   comparison with the Standard model expectation, which has been found at
                          HERA, is also discussed.

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