Transverse momentum spectra for charged particles at the CERN proton-antiproton collider

Abstract

We have measured transverse momentum spectra up to 10 GeV/c for charged particles produced centrally in proton-antiproton collisions at 540 GeV in the centre of mass at the CERN collider. Our results are compared with data at ISR energies and with the predictions of a QCD model. The charged particle spectrum shows a clear dependence on charged track multiplicity. © 1982

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“…It was proposed in [12] long time before Tsallis works [7] (and followed later by [13] and [11]) with a simple aim: to phenomenologically interpolate between the soft region of p T → 0, characterized by exponential behavior of p T distributions, and the hard region of p T 1 GeV, believed to be properly described by QCD. However at that time, the exponent index obtained from fits to p T data was equal to n ∼ 8 (or bigger), far away from the expected point interaction value of n ∼ 4 [17][18][19].…”

Tsallis Distribution Decorated with Log-Periodic Oscillation

“…The same formula re-emerged later to become known as the QCD-based Hagedorn formula [7]. It was used for the first time in [8] and became one of the standard phenomenological formulas for p T data analysis [9][10][11][12][13][14][15][16][17].…”

Towards the measurement of charged hadron spectra in CMS

“…Measured values and empirical fit functions are plotted. Right: average transverse momentum p T at η ≈ 0 as a function of rapidity density of charged particles dN/dη| η=0 with a comparison to UA1 [12] and CDF results [13].…”