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Two- and three-pion quantum statistics correlations in Pb-Pb collisions atsNN=2.76 TeV at the CERN Large Hadron Collider
- Source :
- Physical Review C. 89
- Publication Year :
- 2014
- Publisher :
- American Physical Society (APS), 2014.
-
Abstract
- 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 √sNN=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%.
- Subjects :
- Physics
Nuclear and High Energy Physics
Particle physics
Large Hadron Collider
010308 nuclear & particles physics
Nuclear Theory
Bose–Einstein correlations
01 natural sciences
law.invention
Nuclear physics
Pion
law
0103 physical sciences
Coherent states
High Energy Physics::Experiment
Nuclear Experiment
010306 general physics
Quantum statistical mechanics
Bose–Einstein condensate
Coherence (physics)
Subjects
Details
- ISSN :
- 1089490X and 05562813
- Volume :
- 89
- Database :
- OpenAIRE
- Journal :
- Physical Review C
- Accession number :
- edsair.doi...........55f88ce067fc9a0b89c8fa669b139d86