Search for a Ridge Structure Origin with Shower Broadening and Jet Quenching

Abstract

We investigate the role of jet and shower parton broadening by the strong colour field in the $\Delta \eta$-$\Delta \varphi$ correlation of high $p_T$ particles. When anisotropic momentum broadening ($\Delta p_z>\Delta p_T$) is given to jet and shower partons in the initial stage, a ridge-like structure is found to appear in the two hadron correlation. The ratio of the peak to the pedestal yield is overestimated.

Comments: Talk given at 20th Int. Conf. on Ultra-Relativistic Nucleus-Nucleus Collisions, Jaipur, India, Feb.4-10, 2008