Flow fluctuations in Pb+Pb collisions at with the ATLAS detector
Journal Article
·
· Nuclear Physics. A
- Stony Brook Univ., Stony Brook, NY (United States)
Measurements of four-particle cumulants cn{4} for n = 1,2,3,4 are presented using 470 μb–1 of Pb+Pb collisions at √sNN = 5.02 TeV with the ATLAS detector at the LHC. These cumulants provide information on the event-by-event fluctuations of single harmonics p(vn). For the first time, a negative c1{4} is observed. The c4{4} is found to be negative in central collisions but changes sign around 20–25% centrality. Here this behavior is consistent with a nonlinear contribution to v4 that is proportional to v22 • c2{4}. and c3{4} are calculated using two reference event classes in order to investigate the influence of volume fluctuations.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1503110
- Journal Information:
- Nuclear Physics. A, Vol. 982, Issue C; ISSN 0375-9474
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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