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), Article 024911. https://doi.org/10.1103/PhysRevC.89.024911
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Physical Review CDate
2014Copyright
©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%.
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American Physical SocietyISSN Search the Publication Forum
0556-2813
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http://journals.aps.org/prc/abstract/10.1103/PhysRevC.89.024911Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/23759752
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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.