Improved Geometrical Scaling at the LHC

Details Improved Geometrical Scaling at the LHC Improved Geometrical Scaling at the LHC

2011-01-03

arxiv.org/abs/1101.0585v3

Phys.Rev.Lett.106:142002,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures. In v2 a misprint concerning p_T dependence of lambda_eff corrected. In v3: small corrections, reference ad

Scientific paper

10.1103/PhysRevLett.106.142002

We show that geometrical scaling exhibited by the $p_{\rm T}$ spectra measured by the CMS collaboration at the LHC is substantially improved if the exponent $\lambda$ of the saturation scale depends on $p_{\rm T}$. This dependence is shown to be the same as the dependence of small $x$ exponent of $F_2$ structure function in deep inelastic scattering taken at the scale $Q=p_{\rm T}/2$

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