Universal parametrization of jet production based on parton and fragment rapidities

Abstract

As the signature manifestation of QCD in high energy nuclear collisions jet production provides essential tests of that theory. But event-wise jet reconstruction can be complex and susceptible to measurement bias. And QCD theory in the form of Monte Carlo models of elementary collisions can also be complex and difficult to test. It may be beneficial to construct a simple static model of jet production in p-p collisions to facilitate data comparisons and model tests. QCD is a logarithmic theory featuring variations with energy scale of the form $\log (s/s_0)$. Jet-related data such as parton fragmentation functions plotted on logarithmic rapidities exhibit self-similar scaling behavior which admits simple and accurate parametrization with only a few parameters. In this study we extend that method to construct a parametrization of jet (scattered parton) momentum spectra based on certain measured logarithmic jet production trends. The parametrization is established with SppS jet data and then extrapolated for comparison with Tevatron and LHC jet data. In addition, the jet production model from the present study is combined with a parametrization of p-p fragmentation functions to predict the minimum-bias jet fragment contribution to hadron $p_t$ spectra. The prediction is compared with published p-p spectrum data to test the self-consistency of the model.

10 pages, 10 figures

References in corpus (6)

• Herwig++ Physics and Manual
• The multiplicity dependence of inclusive $p_t$ spectra from p-p collisions at $\sqrt{s}$ = 200 GeV
• Evolution of minimum-bias parton fragmentation in nuclear collisions
• Extrapolating parton fragmentation to low $Q^2$ in $e^{+}$-$e^{-}$ collisions
• Parton fragment yields derived from minimum-bias jet angular correlations
• The Underlying Event and the Total Cross Section from Tevatron to the LHC

Cited by in corpus (3)

• Ultraviolet energy dependence of particle production sources in relativistic heavy-ion collisions
• Ensemble mean ${\mathbf{p}}_{\mathbf{t}}$ vs charged-hadron multiplicities in high energy nuclear collisions
• QCD prediction of jet structure in 2D trigger-associated momentum correlations and implications for multiple parton interactions