Event-by-event gluon multiplicity, energy density, and eccentricities in ultrarelativistic heavy-ion collisions

By B. Schenke, P. Tribedy, R. Venugopalan. 2012

248 citations recorded by the source corpus.

The event-by-event multiplicity distribution, the energy densities and energy density weighted eccentricity moments epsilon_n (up to n=6) at early times in heavy-ion collisions at both RHIC (root-s=200 GeV) and LHC (root-s=2.76 TeV) are computed in the IP-Glasma model. This framework combines the impact parameter dependent saturation model (IP-Sat) for nucleon parton distributions (constrained by HERA deeply inelastic scattering data) with an event-by-event classical Yang-Mills description of early-time gluon fields in heavy-ion collisions. The model produces multiplicity distributions that are convolutions of negative binomial distributions without further assumptions or parameters. The eccentricity moments are compared to the MC-KLN model; a noteworthy feature is that fluctuation dominated odd moments are consistently larger than in the MC-KLN model.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4368b2777fb3746647c738a30dd44f0fbfe5f299

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1. K. Gajdošová
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Citations in the corpus

• Collective flow and hydrodynamics in large and small systems at the LHC (2017, methodology): “As reviewed in the last section, the transport properties of the QGP fireball have been extracted from this flow data with the event-by-event hydrodynamics / hybrid model simulations [30, 110, 154].”