Asymmetric 1+1-dimensional hydrodynamics in collision

Details Asymmetric 1+1-dimensional hydrodynamics in collision Asymmetric 1+1-dimensional hydrodynamics in collision

2010-12-21

arxiv.org/abs/1012.4687v1

Phys.Rev.C83:054905,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 (double) figures

Scientific paper

10.1103/PhysRevC.83.054905

The possibility that particle production in high-energy collisions is a result of two asymmetric hydrodynamic flows is investigated, using the Khalatnikov form of the 1+1-dimensional approximation of hydrodynamic equations. The general solution is discussed and applied to the physically appealing "generalized in-out cascade" where the space-time and energy-momentum rapidities are equal at initial temperature but boost-invariance is not imposed. It is demonstrated that the two-bump structure of the entropy density, characteristic of the asymmetric input, changes easily into a single broad maximum compatible with data on particle production in symmetric processes. A possible microscopic QCD interpretation of asymmetric hydrodynamics is proposed.

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