Scope: PWG
PWG-GA (Photons, Neutral Mesons)
Energy
2.76 TeV
System
Pb-Pb
Figure Group
Figure Image
Figure image (.eps)
Figure image (.pdf)
Figure Caption
Invariant mass distribution of reconstructed photon pairs $M_{\gamm\gamma}$ for the $\pi^{0}$ meson measured with PCM in the centrality class 0–10%.
The black histograms show the signal before background subtraction while the red bullets show the signal after subtraction. The estimated background is indicated with the grey dashed lines. The blue lines are the fit to the invariant mass peak after the combinatorial and residual background subtraction.
Detail description
Data sample: LHC11h
Centrality: 0-10%