Initial-state geometry and the role of hydrodynamics in proton-proton, proton-nucleus, and deuteron-nucleus collisions
By A. Bzdak, B. Schenke, P. Tribedy, R. Venugopalan. 2013
220 citations recorded by the source corpus.
We apply the successful Monte Carlo Glauber and IP-Glasma initial state models of heavy ion collisions to the much smaller size systems produced in proton-proton, proton-nucleus and deuteron- nucleus collisions. We observe a significantly greater sensitivity of the initial state geometry to details of multi-particle production in these models compared to nucleus-nucleus collisions. In particular, we find that the size of the system produced in p+A collisions is very similar to the one produced in p+p collisions, and predict comparable Hanbury-Brown-Twiss radii in the absence of flow in both systems. Differences in the eccentricities computed in the models are large, while differences amongst the generated flow coefficients v_2 and v_3 are smaller. For a large number of participants in proton-lead collisions, the v_2 generated in the IP-Glasma model is comparable to the value obtained in proton-proton collisions. Viscous corrections to flow are large over characteristic lifetimes in the smaller size systems. In contrast, viscous contributions are significantly diminished over the longer space-time evolution of a heavy ion collision.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4dd629f4716325f2a979a7dffb51aa5be3b40031
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In Nuclear and High Energy Physics
Citations in the corpus
- Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV (2013, background): “…to mechanisms that involve initial-state effects, such as gluon saturation and colour connections forming along the longitudinal direction [29–34] and final-state effects, such as parton-induced interactions [35–37], and collective effects arising in a high-density system possibly formed in…”
- Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC (2013, methodology): “In this picture, the p T is a universal function of the ratio of the multiplicity density and the transverse area of the collision, S T , calculated within the color-glass model [14].”