By studying the color structure of multiparticle production processes in p+A-type (dilute-dense) collisions, we find that higher-point functions beyond typical dipoles and quadrupoles, e.g., sextupoles, octupoles, etc., naturally appear in the cross sections, but are explicitly suppressed in the large-N c limit. We evaluate the sextupole in the McLerran-Venugopalan model and find that, in general, its analytical form cannot be written as combination of dipoles and quadrupoles. Within the color glass condensate framework, we present a proof that in the large-Nc limit, all multiparticle production processes in the collision of a dilute system off a dense system can, up to all orders in αs, be described in terms of only dipoles and quadrupoles.
|Physical Review D - Particles, Fields, Gravitation and Cosmology
|Published - Feb 4 2013
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)