22-27 September 2014
Vietri sul Mare
Europe/Berlin timezone

Chiral dynamics and peripheral partons in the nucleon

26 Sep 2014, 17:00
Hotel meeting room (Vietri sul Mare)

Hotel meeting room

Vietri sul Mare


Carlos Granados (Uppsala University)


We introduce transverse densities in the study of parton dynamics in the proton's peripheral region. We calculate these densities using Chiral perturbation theory (ChPT) and parametrize the long distance structure of the nucleon in a model independent framework in which we identify chiral (b~O(M_pi^(⁻1))) and molecular (b~O(M_N^2/(M_pi^(3)))) parametrical regions. Through the light cone formulation of the nucleon's electromagnetic current in ChPT, one calculates transverse densities from local products of light cone wave functions of a pion-nucleon system. These products are understood as 2-dimensional parton distributions and as such are universal in processes that probe the nucleon's periphery. This universality and also that of the corresponding transverse density can be tested and used in phenomenological studies of reactions such as high energy proton-nucleon/nucleus collisions and in electron proton scattering as well as in low Q^2 extraction of baryonic form factors.

Primary author

Carlos Granados (Uppsala University)


Christian Weiss (Jefferson Lab)

Presentation Materials

Peer reviewing