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タイトル
和文:Measurement of multi-particle azimuthal correlations in pp, p?+?Pb and low-multiplicity Pb?+?Pb collisions with the ATLAS detector 
英文:Measurement of multi-particle azimuthal correlations in pp, p?+?Pb and low-multiplicity Pb?+?Pb collisions with the ATLAS detector 
著者
和文: M. Aaboud, 陣内 修, 久世 正弘, 山口 洋平, et al..  
英文: M. Aaboud, Osamu Jinnouchi, Masahiro.Kuze, Youhei Yamaguchi, et al..  
言語 English 
掲載誌/書名
和文:European Physical Journal C 
英文:European Physical Journal C 
巻, 号, ページ Vol. 77    No. 6    pp. "428"
出版年月 2017年6月 
出版者
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英文: 
会議名称
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開催地
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公式リンク https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021336984&doi=10.1140%2fepjc%2fs10052-017-4988-1&partnerID=40&md5=82017d5d732e8d519b44dc4f53ec8f3a
 
DOI https://doi.org/10.1140/epjc/s10052-017-4988-1
アブストラクト Multi-particle cumulants and corresponding Fourier harmonics are measured for azimuthal angle distributions of charged particles in $pp$ collisions at $\sqrt{s}$ = 5.02 and 13?TeV and in $p$ ?+?Pb collisions at $\sqrt{s_{_\text {NN}}}$ = 5.02?TeV, and compared to the results obtained for low-multiplicity $\mathrm{Pb}~+~\mathrm{Pb}$ collisions at $\sqrt{s_{_\text {NN}}}$ = 2.76?TeV. These measurements aim to assess the collective nature of particle production. The measurements of multi-particle cumulants confirm the evidence for collective phenomena in $p$ ?+?Pb and low-multiplicity $\mathrm{Pb}~+~\mathrm{Pb}$ collisions. On the other hand, the $pp$ results for four-particle cumulants do not demonstrate collective behaviour, indicating that they may be biased by contributions from non-flow correlations. A comparison of multi-particle cumulants and derived Fourier harmonics across different collision systems is presented as a function of the charged-particle multiplicity. For a given multiplicity, the measured Fourier harmonics are largest in $\mathrm{Pb}~+~\mathrm{Pb}$ , smaller in $p$ ?+?Pb and smallest in $pp$ collisions. The $pp$ results show no dependence on the collision energy, nor on the

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