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arXiv · 1212.3102

Universal geometrical scaling for hadronic interactions

C. Andrés·A. Moscoso·C. Pajares
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Abstract

It is shown that defining a suitable saturation momentum $Q_s$, the $p_T$ distributions of pp and AA collisions for any centrality and energy depend only on $τ=p^2_T/Q_s^2$ for $p_T 1$, the higher the energy or the larger the size of the participant nuclei, the larger suppression present the respective spectra. The integrated spectrum gives a fraction of the hard multiplicity in the range from 9% for pp at 0.9 TeV to 2% for Pb-Pb central collisions at 2.76 TeV.

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C. Andrés, A. Moscoso, C. Pajares. 2013-03-06. Universal geometrical scaling for hadronic interactions. https://doi.org/10.1016/j.nuclphysa.2013.02.013

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