Evidence for hydrodynamic evolution in proton-proton scattering at 900 GeV

scattering at LHC energies, large numbers of elementary scatterings will contribute significantly, and the corresponding high multiplicity events will be of particular interest. Elementary scatterings are parton ladders, identified with color flux-tubes. In high multiplicity events, many of these flux tubes are produced in the same space region, creating high energy densities. We argue that there are good reasons to employ the successful procedure used for heavy ion collisions: matter is assumed to thermalizes quickly, such that the energy from the flux-tubes can be taken as initial condition for a hydrodynamic expansion. This scenario gets spectacular support from very recent results on Bose-Einstein correlations in

pp

scattering at 900 GeV at LHC.

Note:

11 pages, 20 figures

13.85.-t
25.40.Ve
25.75.-q
heavy ion: scattering
energy: density
color: flux tube
correlation: Bose-Einstein
hydrodynamics
CERN LHC Coll
multiplicity: high

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