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%

B. Abelev, J. Adam, D. Adamová, M. M. Aggarwal, G. Aglieri Rinella, M. Agnello, et al. (2014). Two- and three-pion quantum statistics correlations in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV at the CERN Large Hadron Collider. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 89, 1-19 [10.1103/PhysRevC.89.024911].

Two- and three-pion quantum statistics correlations in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV at the CERN Large Hadron Collider

A. Alici;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;COLOCCI, MANUEL;GUERZONI, BARBARA;SCIOLI, GILDA;
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%
2014
B. Abelev, J. Adam, D. Adamová, M. M. Aggarwal, G. Aglieri Rinella, M. Agnello, et al. (2014). Two- and three-pion quantum statistics correlations in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV at the CERN Large Hadron Collider. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 89, 1-19 [10.1103/PhysRevC.89.024911].
B. Abelev;J. Adam;D. Adamová;M. M. Aggarwal;G. Aglieri Rinella;M. Agnello;A. G. Agocs;A. Agostinelli;N. Agrawal;Z. Ahammed;N. Ahmad;A. Ahmad Masoodi;I...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/427769
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