Saturation of Hadron Production in Proton-(anti)Proton Collisions at Low Pt

Details Saturation of Hadron Production in Proton-(anti)Proton Collisions at Low Pt Saturation of Hadron Production in Proton-(anti)Proton Collisions at Low Pt

2011-01-18

arxiv.org/abs/1101.3439v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to XXth International Baldin Seminar on High Energy Physics Problems: Relativistic Nuclear Physics and Quantum Ch

Scientific paper

Experimental data on inclusive cross sections of the hadrons produced in high energy proton-(anti)proton collisions are analyzed in the z-scaling approach. Saturation of the scaling function PSI(z) for z<0.1 (low transverse momenta) was found. The first results on charged hadron spectra in pp collisions obtained by the CMS Collaboration at the LHC have confirmed the saturation down to the value of z=0.05. The CMS data on neutral K-meson production at s^{1/2}=7 TeV extend the saturation region even to a lower value of z=0.002 in the new energy domain. A microscopic scenario of hadron production at a constituent level based on the z-scaling is discussed in the saturation regime.

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