$\pi^{0}$\ production in p+p and Pb+Pb collisions at the LHC
ORAL
Abstract
We report results of the $\pi^{0}$\ reconstruction in p+p and Pb+Pb at $\sqrt(S_{NN})$ = 2.76 TeV collisions at the LHC, using invariant mass and shower shape analysis based on signals from the ALICE EMCal and PHOS electromagnetic calorimeters, and $e^{+}e^{-}$ conversion pair reconstruction with the central tracking system. We present measurements of the $\pi^{0}$ production cross section as a function of transverse momentum and the neutral pion elliptic flow compared with the $v_{2}$ of charged pions. We use the measured spectra to determine the nuclear modification factor, $R_{AA}$, of Pb+Pb collisions which we compare to theoretical predictions, results from RHIC as well as from the charged pion analysis, showing a strong supression of the $\pi^{0}$ spectrum at high-$p_{T}$.
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Authors
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Jocelyn Mlynarz
Wayne State University