1212.0260 (K. Urmossy)

Multiplicity Dependence of Hadron Spectra in Proton-proton Collisions at
LHC Energies and Super-statistics    [PDF]

K. Urmossy

In this paper, transverse momentum spectra of pi+, K+ and p measured at fix event-multiplicities and \sqrt s = 0.9, 2.76 and 7 TeV collision energies by the CMS Collabotaion are shown to fit the Tsallis-distribution. It is found that the power of the distribution shows a double-logarithmic dependence on the event-multiplicity N, while the T parameter depends linearly on N. A possible super-statistical origin of such phenomena induced by the event-by-event fluctuation of the total transverse energy E_T and N is discussed.

View original: http://arxiv.org/abs/1212.0260