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Flow fluctuations i...
Flow fluctuations in Pb plus Pb collisions at √sNN=5.02 TeV with the ATLAS detector
- Article/chapterEnglish2019
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Elsevier BV,2019
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LIBRIS-ID:oai:DiVA.org:uu-378200
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-378200URI
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https://doi.org/10.1016/j.nuclphysa.2018.09.012DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Title in WoS: Flow fluctuations in Pb plus Pb collisions at root s(NN)=5.02 TeV with the ATLAS detectorFor complete list of authors see http://dx.doi.org/10.1016/j.nuclphysa.2018.09.012
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Measurements of four-particle cumulants c(n){4} for n = 1, 2, 3, 4 are presented using 470 mu b(-1) of Pb+Pb collisions at root s(NN) = 5.02 TeV with the ATLAS detector at the LHC. These cumulants provide information on the event-by-event fluctuations of single harmonics p(v(n)). For the first time, a negative c(1){4} is observed. The c(4){4} is found to be negative in central collisions but changes sign around 20-25% centrality. This behavior is consistent with a nonlinear contribution to v(4) that is proportional to v(2)(2). c(2){4} and c(3){4} are calculated using two reference event classes in order to investigate the influence of volume fluctuations. Over most of the centrality range, c(2){4} and c(3){4} are found to be negative, while in the ultra-central collisions, c(2){4} changes sign and becomes positive, suggesting a deviation from Gaussian behavior in the event-by-event fluctuation of v(2). The magnitudes of the sign change are also found to be dependent of the event class definition .
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Asimakopoulou, Eleni M.Uppsala universitet,Högenergifysik(Swepub:uu)eleas553
(author)
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Bergeås Kuutmann, Elin,1980-Uppsala universitet,Högenergifysik(Swepub:uu)elibe340
(author)
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Bokan, PetarUppsala universitet,Högenergifysik(Swepub:uu)petbo828
(author)
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Brenner, RichardUppsala universitet,Högenergifysik(Swepub:uu)richbren
(author)
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Ekelöf, TordUppsala universitet,Högenergifysik(Swepub:uu)tordeke
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Ellert, MattiasUppsala universitet,Högenergifysik(Swepub:uu)mel03009
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Ferrari, Arnaud,1973-Uppsala universitet,Högenergifysik(Swepub:uu)arfer499
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Gradin, P. O. JoakimUppsala universitet,Högenergifysik(Swepub:uu)joagr105
(author)
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Isacson, MaxUppsala universitet,Högenergifysik(Swepub:uu)maxis346
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Mårtensson, Mikael U. F.Uppsala universitet,Högenergifysik(Swepub:uu)mikma359
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Sales De Bruin, PedroUppsala universitet,Högenergifysik(Swepub:uu)pedsa873
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Zwalinski, L.
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Uppsala universitetHögenergifysik
(creator_code:org_t)
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In:Nuclear Physics A: Elsevier BV982, s. 323-3260375-94741873-1554
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Ellert, Mattias
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