Multiparticle correlation studies in pPb collisions at sNN =8.16 TeV
The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at sNN=8.16TeV, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. Th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2020
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/82489/ http://irep.iium.edu.my/82489/2/82489_Multiparticle%20correlation%20studies%20in%20pPb_ft.pdf http://irep.iium.edu.my/82489/1/82489_Multiparticle%20correlation%20studies%20in%20pPb_scopus.pdf |
| Summary: | The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at sNN=8.16TeV, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. The second-order "elliptic" harmonic moment is obtained with high precision through four-, six-, and eight-particle correlations and, for the first time, the third-order "triangular" harmonic moment is studied using four-particle correlations. A sample of peripheral PbPb collisions at sNN=5.02TeV that covers a similar range of event multiplicities as the pPb results is also analyzed. Model calculations of initial-state fluctuations in pPb and PbPb collisions can be directly compared to the high-precision experimental results. This work provides new insight into the fluctuation-driven origin of the v3 coefficients in pPb and PbPb collisions, and into the dominating overall collision geometry in PbPb collisions at the earliest stages of heavy ion interactions. |
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