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Correlated long-range mixed-harmonic fluctuations measured in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector

2019-02-10Journal article Open access
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dc.contributor.authorATLAS collaboration (2925 authors)
dc.contributor.authorAguilar Saavedra, Juan Antonio
dc.contributor.authorAmor Dos Santos, Susana Patricia
dc.contributor.authorAraque Espinosa, Juan Pedro
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muino, Patricia
dc.contributor.authorDa Cunha Sargedas De Sousa, Mario Jose
dc.contributor.authorDias DO Vale, Tiago
dc.contributor.authorFaisca Rodrigues Pereira, Rui Miguel
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGalhardo, Bruno
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGoncalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amelia
dc.contributor.authorManeira, Jose
dc.contributor.authorMendes Gouveia, Emanuel Demetrio
dc.contributor.authorOleiro Seabra, Luis Filipe
dc.contributor.authorOnofre, Antonio
dc.contributor.authorCosta Batalha Pedro, Rute
dc.contributor.authorPereira Peixoto, Ana Paula
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, Joao
dc.contributor.authorSilva, Jose Manuel
dc.contributor.authorTavares Delgado, Ademar
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-05T16:39:11Z
dc.date.available2019-02-05T16:39:11Z
dc.date.issued2019-02-10
dc.date.updated2019-02-05T16:39:11Z
dc.description.abstractCorrelations of two flow harmonics vn and vm via three- and four-particle cumulants are measured in 13 TeV pp , 5.02 TeV p +Pb, and 2.76 TeV peripheral Pb+Pb collisions with the ATLAS detector at the LHC. The goal is to understand the multi-particle nature of the long-range collective phenomenon in these collision systems. The large non-flow background from dijet production present in the standard cumulant method is suppressed using a method of subevent cumulants involving two, three and four subevents separated in pseudorapidity. The results show a negative correlation between v2 and v3 and a positive correlation between v2 and v4 for all collision systems and over the full multiplicity range. However, the magnitudes of the correlations are found to depend on the event multiplicity, the choice of transverse momentum range and collision system. The relative correlation strength, obtained by normalisation of the cumulants with the 〈vn2〉 from a two-particle correlation analysis, is similar in the three collision systems and depends weakly on the event multiplicity and transverse momentum. These results based on the subevent methods provide strong evidence of a similar long-range multi-particle collectivity in pp , p +Pb and peripheral Pb+Pb collisions.
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B789 (2019) 444-471 Phys. Lett. B 789 (2019) 444; DOI 10.1016/j.physletb.2018.11.065
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2018.11.065
dc.identifier.urihttp://hdl.handle.net/10400.26/27678
dc.language.isoeng
dc.titleCorrelated long-range mixed-harmonic fluctuations measured in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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