Two- and three-pion quantum statistics correlations in Pb-Pb collisions at root S-NN=2.76 TeV at the CERN Large Hadron Collider
ALICE Collaboration. (2014). Two- and three-pion quantum statistics correlations in Pb-Pb collisions at root S-NN=2.76 TeV at the CERN Large Hadron Collider. Physical Review C, 89 (2), 024911. doi:10.1103/PhysRevC.89.024911
Published inPhysical Review C
Rak, Jan |
©2014 CERN, for the Alice Collaboration. This is an open access article published under Creative Commons license.
[Introduction] Correlations induced by quantum statistics are sensitive to the spatiotemporal 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 √ s N N = 2 . 76 TeV at the CERN Large Hadron Collider 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 23% ± 8%.
PublisherAmerican Physical Society
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Except where otherwise noted, this item's license is described as ©2014 CERN, for the Alice Collaboration. This is an open access article published under Creative Commons license.
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