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On saturation of charged hadron production in pp collisions at LHC
First results on charged hadron transverse momentum spectra in pp collisions obtained by the CMS Collaboration at the LHC are analyzed in the z-scaling approach. These LHC data confirm z-scaling. The saturation regime of the scaling function Delta *v(z) observed in pp and interactions at lower energ...
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Published in: | Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2010-08, Vol.37 (8), p.085008-085008 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | First results on charged hadron transverse momentum spectra in pp collisions obtained by the CMS Collaboration at the LHC are analyzed in the z-scaling approach. These LHC data confirm z-scaling. The saturation regime of the scaling function Delta *v(z) observed in pp and interactions at lower energies GeV is verified. The saturation of Delta *v(z) for charged hadrons is found down to a value of z 0.05 at the highest energy GeV currently reached by the colliders. A microscopic scenario of hadron production is discussed in connection with the search for new signatures of phase transitions in hadron matter. Constituent energy loss and its dependences on the transverse momentum and collision energy are estimated. We suggest that the beam energy scan program in the saturation region at the LHC could be of interest. |
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ISSN: | 0954-3899 1361-6471 |
DOI: | 10.1088/0954-3899/37/8/085008 |