Invariant yields of neutral pions at midrapidity in the transverse momentum range 0.6 < pT < 12 GeV/c mea- sured in Pb–Pb collisions at √sNN = 2.76 TeV are presented for six centrality classes. The pp reference spectrum was mea- sured in the range 0.4 < pT < 10 GeV/c at the same center- of-mass energy. The nuclear modification factor, RAA , shows a suppression of neutral pions in central Pb–Pb collisions by a factor of up to about 8−10 for 5 <= pT <= 7GeV/c. The presented measurements are compared with results at lower center-of-mass energies and with theoretical calculations.
Neutral pion production at midrapidity in pp and Pb–Pb collisions at $$\sqrt{s_{\mathrm {NN}}}= 2.76\,{\mathrm {TeV}}$$ s NN = 2.76 TeV
BALA, RENU;BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;L. Bianchi;BOTTA, Elena;BRUNA, ELENA;BUFALINO, STEFANIA;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;LATTUCA, ALESSANDRA;LEONCINO, MARCO;MASERA, Massimo;MILANO, LEONARDO;OPPEDISANO, Chiara;RAMELLO, Luciano;RIVETTI, Angelo;RUSSO, RICCARDO;
2014-01-01
Abstract
Invariant yields of neutral pions at midrapidity in the transverse momentum range 0.6 < pT < 12 GeV/c mea- sured in Pb–Pb collisions at √sNN = 2.76 TeV are presented for six centrality classes. The pp reference spectrum was mea- sured in the range 0.4 < pT < 10 GeV/c at the same center- of-mass energy. The nuclear modification factor, RAA , shows a suppression of neutral pions in central Pb–Pb collisions by a factor of up to about 8−10 for 5 <= pT <= 7GeV/c. The presented measurements are compared with results at lower center-of-mass energies and with theoretical calculations.File in questo prodotto:
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