41 research outputs found
Multiparticle production in the Glasma at NLO and plasma instabilities
We discuss the relation between multi-particle production in the Glasma at
next-to-leading order and the physics of plasma instabilities.Comment: 4 pages, talk at Quark Matter 200
Proton-nucleus collisions in the color glass condensate framework
We discuss proton-nucleus collisions in the framework of the color glass
condensate. By assuming that the proton can be described as a low density color
source, we solve exactly the Yang-Mills equations corresponding to this type of
collision, and then use this solution in order to calculate inclusive gluon
production or quark-antiquark production. Our result shows that
k_T-factorization, while valid for gluon production, is violated for quark pair
production in proton-nucleus collisions.Comment: Talk given at SEWM2004, Helsinki, June 200
Melting the Color Glass Condensate at the LHC
The charged particle multiplicity in central AA collisions and the production
of heavy flavors in pA collisions at the LHC is predicted in the CGC framework.Comment: Presented at the Workshop on Heavy Ion Collisions at the LHC: Last
Call for Predictions, Geneva, Switzerland, 14 May - 8 Jun 2007; 2 pages, 3
figure
The glasma initial state and JIMWLK factorization
We review recent work on understanding the next to leading order corrections
to the classical fields that dominate the initial stages of a heavy ion
collision. We have recently shown that the leading ln(1/x) divergences of these
corrections to gluon multiplicities can be factorized into the JIMWLK evolution
of the color charge density distributions.Comment: 4 pages, 2 figures. Talk given by T.L. at Strong and Electroweak
Matter 2008 (SEWM08), August 26-29, 2008, Amsterdam, The Netherland
Heavy flavor production in pA collisions
Heavy quark production in high-energy proton-nucleus (pA) collisions is
described in the framework of the Color Glass Condensate. kT factorization is
broken even at leading order albeit a more general factorization in pA holds at
this order in terms of 2, 3 and 4 point correlators of Wilson lines in the
nuclear target. The x-evolution of these correlators is computed in the large A
and large N mean field limit of the Balitsky-Kovchegov equation. We show
results for heavy quark production at RHIC and LHC energies.Comment: Talk given at QM2006. 4
High energy factorization in nucleus-nucleus collisions II - Multigluon correlations
We extend previous results (arXiv:0804.2630 [hep-ph]) on factorization in
high-energy nucleus-nucleus collisions by computing the inclusive multigluon
spectrum to next-to-leading order. The factorization formula is strictly valid
for multigluon emission in a slice of rapidity of width \Delta Y< 1/\alpha_s.
Our results show that often neglected disconnected graphs dominate the
inclusive multigluon spectrum and are essential to prove factorization for this
quantity. These results provide a dynamical framework for the Glasma flux tube
picture of the striking "ridge"-like correlation seen in heavy ion collisions.Comment: 29 page
Ekpyrosis and inflationary dynamics in heavy ion collisions: the role of quantum fluctuations
We summarize recent significant progress in the development of a
first-principles formalism to describe the formation and evolution of matter in
very high energy heavy ion collisions. The key role of quantum fluctuations
both before and after a collision is emphasized. Systematic computations are
now feasible to address early time dynamics essential to quantifying properties
of strongly interacting quark-gluon matter.Comment: Talk by R.V. at Quark Matter 2011, Annecy, France, May 23-28, 2011.
LaTex, 4 pages; v2, final version to appear in J. Phys.
Violation of kT factorization in quark production from the Color Glass Condensate
We examine the violation of the kT factorization approximation for quark
production in high energy proton-nucleus collisions. We comment on its
implications for the open charm and quarkonium production in collider
experiments.Comment: 4 pages, 6 figures, contribution to proceedings of Quark Matter 2005,
Budapest, Aug 4-