Initial state geometry and fluctuations in deformed and asymmetric nuclear collisions in the IP-Glasma framework

19 May 2014, 11:40
20m
titanium (darmstadtium)

titanium

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Initial State Physics Initial state physics

Speaker

Prithwish Tribedy (VECC)

Description

The IP-Glasma model of initial conditions based on the *ab initio* color glass condensate (CGC) framework successfully explains the bulk features of global data for various systems like p+p, p+A and A+A over a wide range of energies [1-3]. We employ this framework to study deformed U+U collisions, asymmetric Cu+Au collisions and the effect of deformation in Au+Au collisions at RHIC. A combined study of these heavy ion systems with varying initial geometries can provide a unique opportunity to determine the origin of different sources of fluctuations that affect global observables like multiplicity and flow. We study the sensitivity of multiplicity, eccentricity and their event-by-event distributions to the details of initial state geometry. Results are compared to a two component MC-Glauber model implementation that includes Negative-Binomial multiplicity fluctuations. We argue that measurements of global observables for these systems at RHIC can constrain the mechanism of multi-particle production [4]. Ref : [1]B .Schenke, P. Tribedy, R. Venugopalan, Phys. Rev. Lett. 108 (2012) 252301, Phys.Rev. C89 (2014) 024901. [2]C. Gale, S. Jeon, B. Schenke, P. Tribedy, R. Venugopalan, Phys.Rev.Lett. 110 (2013) 012302. [3]A. Bzdak, B. Schenke, P. Tribedy, R. Venugopalan, Phys. Rev. C 87, 064906 (2013). [4]B .Schenke, P. Tribedy, R. Venugopalan *in preparation*

Primary author

Prithwish Tribedy (VECC)

Co-authors

Dr Bjoern Schenke (Brookhaven National Lab) Raju Venugopalan (Brookhaven National Laboratory)

Presentation Materials