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Model comparisons to the ratio of pp and p–Pb fragmentation functions

Figure Information
Scope: PWG
PWG-GA (Photons, Neutral Mesons)
Energy
5.02 TeV
System
p-p
p-Pb
Figure Group
Paper Figures: Measurement of isolated photon–hadron correlations in pp and p–Pb collisions at 5TeV
Figure Image
Figure image (.eps)
2020-06-01-Model_Comparisons_Ratio.eps
Figure image (.pdf)
2020-06-01-2020-06-01-Model_Comparisons_Ratio.pdf
Figure Caption

The ratio of isolated-tagged fragmentation functions for pp and p–Pb data at sqrt(s) = 5.02 TeV as measured by the ALICE detector.  The ratio is compared to two models from arXiv:2003.02441.The cold nuclear matter (CNM) model evolves the partons without parton energy loss, while the quark
gluon pasma (QGP) model assumes that a small droplet of QGP is created in p–Pb collisions and applies an energy loss to the partons.

Detail description

The model are obtained from Xin-Nian Wang Man Xie and Han-Zhong Zhang. g-hadron spectra in p+Pb collisions at sqrt(s) = 5.02 TeV(arXiv:2003.02441). The ALICE data presented in the figure is ratio plot from figure 5. The models are added in order to compare the fragmentation function ratio between p–Pb and pp to the predicted effect of hadron fragmentation in p–Pb using cold nuclear matter effects and quark-gluon-plasma droplet effects.

  • Keywords: isolated photon-hadron correlations, fragmentation function ratio, qgp droplet 
  • Derived from the ratio shown in Fig 5 in paper
  • Data sample: LHC13def, LHC17q
  • Reco pass: pass4, pass1_CENT_wSDD
  • MC: gamma Jet LHC17g6a1, LHC18b10a(b)_calo ; JetJet: LHC17g6a3, LHC18l2a(b)