Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Schwerionenkollisionen und QCD Phasen

HK 39.4: Talk

Tuesday, March 5, 2013, 17:45–18:00, HSZ-201

Correlations and Fluctuations Arising from Inhomogeneous Initial Conditions — •George Moschelli¹ and Sean Gavin² — ¹Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Str. 1, D-60438 Frankfurt — ²Department of Physics and Astronomy, Wayne State University, 666 W Hancock,Detroit, MI, 48202, USA

Fluctuation and correlation observables are often measured using multi-particle correlation methods and therefore mutually probe the origins of genuine correlations present in multi-particle distribution functions. We investigate the common influence of correlations arising from the spatially inhomogeneous initial state on multiplicity and momentum fluctuations as well as flow fluctuations. Although these observables reflect different aspects of the initial state, taken together, they can constrain a correlation scale set at the earliest moments of the collision. We calculate both the correlation scale in an initial stage Glasma flux tube picture and the modification to these correlations from later stage hydrodynamic flow and find quantitative agreement with experimental measurements over a range of collision systems and energies.
This work is supported by The Alliance Program of the Helmholtz Association (HA216/EMMI).