Abstract : We study the effects of the | qqq q\bar{q} component of the hadronic wave function on the description of the electromagnetic structure of the nucleon. Starting with a qqq baryonic wave function which describes the baryonic and mesonic low energy spectrum, the extra q\bar{q} pair is generated through a relativistic version of the 3P_0 model. It is shown that this model leads to a renormalization of the quark mass that allows one to construct a conserved electromagnetic current. We conclude that these dynamical relativistic corrections play an important role in reproducing the Q2 dependence of the electromagnetic form factors at low Q^2.
http://hal.in2p3.fr/in2p3-00011653 Contributor : Lpsc BibliothequeConnect in order to contact the contributor Submitted on : Monday, November 26, 2001 - 1:11:17 PM Last modification on : Tuesday, January 4, 2022 - 10:33:07 AM Long-term archiving on: : Tuesday, June 2, 2015 - 12:30:22 PM
F. Cano, B. Desplanques, P. Gonzalez, S. Noguera. Electromagnetic form factors of the nucleon in a relativistic quark pair creation model. Physics Letters B, Elsevier, 2001, 521, pp.225-232. ⟨10.1016/S0370-2693(01)01193-5⟩. ⟨in2p3-00011653⟩