Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC

3Citations
Citations of this article
1Readers
Mendeley users who have this article in their library.

Abstract

We present empirical features of parton energy loss in nucleus-nucleus collisions at RHIC through studies of the spectra and nuclear modification factors (RA A) for charged hadrons, neutral pions (π0) and non-photonic electrons. The flat distribution of RA A at high transverse momentum (pT) for a given collision centrality is consistent with a scenario where parton energy loss Δ pT is proportional to pT. The centrality dependence of the parton energy loss indicates the absence of path length dependence in the magnitude of energy loss. The lack of strong path length dependence suggests a dynamical picture where the dense partonic medium undergoes rapid expansion and the density of the medium falls rapidly in the first a few Fermi interval, which may be much shorter than the full path length. Implications of the empirical constraints on the parton energy loss will also be discussed.

Cite

CITATION STYLE

APA

Wang, G., & Huang, H. Z. (2009). Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 672(1), 30–34. https://doi.org/10.1016/j.physletb.2009.01.005

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free