Extrapolating parton fragmentation to low $Q^2$ in $e^{+}$-$e^{-}$ collisions

Abstract

We analyze the energy scale dependence of fragmentation functions from $e^{+}$-$e^{-}$ collisions using conventional momentum measures $x_p$ and ${\xi }_p$ and rapidity $y$. We find that replotting fragmentation functions on a normalized rapidity variable results in a compact form precisely represented by the beta distribution, its two parameters varying slowly and simply with parton energy scale $Q$. The resulting parameterization enables extrapolation of fragmentation functions to low $Q$ in order to describe fragment distributions at low transverse momentum $p_t$ in heavy ion collisions at RHIC.

19 pages, 20 figures

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Cited by in corpus (26)

• Tsallis Fits to pT Spectra and Multiple Hard Scattering in pp Collisions at the LHC
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• Evolution of minimum-bias parton fragmentation in nuclear collisions
• Centrality evolution of $p_t$ and $y_t$ spectra from Au-Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Universal Centrality and Collision Energy Trends for $v_2$ Measurements From 2D Angular Correlations
• Parton fragment yields derived from minimum-bias jet angular correlations
• Momentum Kick Model Description of the Ridge in (Delta-phi)-(Delta eta) Correlation in pp Collisions at 7 TeV
• Azimuth quadrupole component spectra on transverse rapidity ${\mathbf{y}}_{\mathbf{t}}$ for identified hadrons from Au-Au collisions at $\sqrt{s_{NN}}=$ 200 GeV
• The RHIC azimuth quadrupole: "perfect liquid" or gluonic radiation?
• The azimuth structure of nuclear collisions -- I
• Is hydrodynamics relevant to RHIC collisions?
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• A critical review of RHIC experimental results
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• On the presence of nonjet "higher harmonic" components in 2D angular correlations from high energy heavy ion collisions
• Gluon correlations from a Glasma flux-tube model compared to measured hadron correlations on transverse momentum $({\mathbf{p}}_{\mathbf{t}},{\mathbf{p}}_{\mathbf{t}})$ and angular differences $({\eta }_{\mathbf{\Delta }},{\varphi }_{\mathbf{\Delta }})$
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• Charge-multiplicity and collision-energy dependence of $p_t$ spectra from $p$-$p$ collisions at the relativistic heavy-ion collider and large hadron collider
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• Bose-Einstein Interference in the Passage of a Jet in a Dense Medium
• Glasma flux tubes vs minimum-bias jets in 2D angular correlations on $\eta$ and $\varphi$
• Phenomenological models of two-particle correlation distributions on transverse momentum in relativistic heavy-ion collisions
• Feynman Amplitude Approach to study the Passage of a Jet in a Medium
• Comparing the PYTHIA Monte Carlo to a two-component (soft + hard) model of hadron production in high-energy p-p collisions
• Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions
• QCD prediction of jet structure in 2D trigger-associated momentum correlations and implications for multiple parton interactions