# Two and Three-Pion Quantum Statistics Correlations in Pb-Pb Collisions at sqrt(sNN)=2.76 TeV at the LHC

Abstract : Correlations induced by quantum statistics are sensitive to the spatio-temporal extent as well as dynamics of particle emitting sources in heavy-ion collisions. In addition, such correlations can be used to search for the presence of a coherent component of pion production. Two and three-pion correlations of same and mixed-charge are measured at low relative momentum to estimate the coherent fraction of charged pions in Pb-Pb collisions at sqrt(sNN)= 2.76 TeV at the LHC with ALICE. The genuine three-pion quantum statistics correlation is found to be suppressed relative to the two-pion correlation based on the assumption of fully chaotic pion emission.The suppression is observed to decrease with triplet momentum. The observed suppression at low triplet momentum may correspond to a coherent fraction in charged pion emission of 22% +- 12%.
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Journal articles
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http://hal.in2p3.fr/in2p3-00878401
Contributor : Sylvie Flores <>
Submitted on : Wednesday, October 30, 2013 - 9:09:32 AM
Last modification on : Tuesday, January 5, 2021 - 9:30:19 AM

### Citation

B. Abelev, Laurent Aphecetche, Y.W. Baek, V. Barret, N. Bastid, et al.. Two and Three-Pion Quantum Statistics Correlations in Pb-Pb Collisions at sqrt(sNN)=2.76 TeV at the LHC. Physical Review C, American Physical Society, 2014, 89, pp.024911. ⟨10.1103/PhysRevC.89.024911⟩. ⟨in2p3-00878401⟩

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