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arXiv · 1309.7330

Relativistic Hard-Scattering and Tsallis Fits to pT Spectra in pp Collisions at the LHC

Cheuk-Yin Wong·Grzegorz Wilk
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Abstract

Motivated by the good Tsallis fits to the high-pT spectra in pp collisions at the LHC, we study the relativistic hard-scattering model and obtain an approximate analytical expression for the differential hard-scattering cross section at η~ 0. The power-law behaviour of the transverse spectra, in the form of dσ/dpT^2 \propto 1/pT^n, gives a power index n in the range of 4.5-5.5 for jet production as predicted by pQCD, after the dependencies of the structure functions and the running coupling constant are properly taken into account. The power indices for hadron production n are slightly greater than those for jet production.

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Cheuk-Yin Wong, Grzegorz Wilk. 2013-09-27. Relativistic Hard-Scattering and Tsallis Fits to pT Spectra in pp Collisions at the LHC. https://arxiv.org/abs/1309.7330

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