New insights of multi-particle azimuthal correlations with symmetric cumulants in p-p, p-Pb, and Pb-Pb collisions. Guilbaud, M. Nuclear Physics A, 967(Supplement C):325–328, November, 2017.
New insights of multi-particle azimuthal correlations with symmetric cumulants in p-p, p-Pb, and Pb-Pb collisions [link]Paper  doi  abstract   bibtex   
The first comparison of anisotropy harmonics (vn, n = 2–4) and event-by-event correlations of different orders between p–p (13 TeV), p–Pb (5.02 and 8.16 TeV) and Pb–Pb (5.02 TeV) as a function of multiplicity is presented. The vn coefficients are extracted via long-range (\textbarΔη\textbar\textgreater2) two-particle correlations reaching a very-high-multiplicity region. Event-by-event correlations among v2, v3 and v4 are measured using the four-particle symmetric cumulant (SC(n,m), n = 2, m = 3, 4). For high-multiplicity (more than 100 tracks) events, v2 is found to have a negative correlation with the v3, while the v2 and v4 are positively correlated. Normalized by the two-particle vn, the SC(2,3) are quantitatively similar for p–Pb and Pb–Pb data, while a strong system size dependence is observed for SC(2,4). These new data provide important insights to the origin of collectivity observed in small collision systems.
@article{guilbaud_new_2017,
	series = {The 26th {International} {Conference} on {Ultra}-relativistic {Nucleus}-{Nucleus} {Collisions}: {Quark} {Matter} 2017},
	title = {New insights of multi-particle azimuthal correlations with symmetric cumulants in p-p, p-{Pb}, and {Pb}-{Pb} collisions},
	volume = {967},
	issn = {0375-9474},
	url = {http://www.sciencedirect.com/science/article/pii/S0375947417302774},
	doi = {10.1016/j.nuclphysa.2017.06.016},
	abstract = {The first comparison of anisotropy harmonics (vn, n = 2–4) and event-by-event correlations of different orders between p–p (13 TeV), p–Pb (5.02 and 8.16 TeV) and Pb–Pb (5.02 TeV) as a function of multiplicity is presented. The vn coefficients are extracted via long-range ({\textbar}Δη{\textbar}{\textgreater}2) two-particle correlations reaching a very-high-multiplicity region. Event-by-event correlations among v2, v3 and v4 are measured using the four-particle symmetric cumulant (SC(n,m), n = 2, m = 3, 4). For high-multiplicity (more than 100 tracks) events, v2 is found to have a negative correlation with the v3, while the v2 and v4 are positively correlated. Normalized by the two-particle vn, the SC(2,3) are quantitatively similar for p–Pb and Pb–Pb data, while a strong system size dependence is observed for SC(2,4). These new data provide important insights to the origin of collectivity observed in small collision systems.},
	number = {Supplement C},
	urldate = {2017-11-13},
	journal = {Nuclear Physics A},
	author = {Guilbaud, Maxime},
	month = nov,
	year = {2017},
	keywords = {CMS, Fluctuations, LHC, QGP, correlations, flow, heavy ion, small systems, symmetric cumulants},
	pages = {325--328}
}

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