Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p plus pb collisions with the atlas detector at the cern large hadron collider
文献类型：期刊论文
| 作者 | Aaboud, M.198,199; Aad, G.129,130; Abbott, B.161; Abdinov, O.15; Abeloos, B.165; Abidi, S. H.230; AbouZeid, O. S.202; Abraham, N. L.219; Abramowicz, H.223; Abreu, H.222 |
| 刊名 | Physical review c
 |
| 出版日期 | 2018-02-12 |
| 卷号 | 97期号:2页码:25 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/physrevc.97.024904 |
| 通讯作者 | Aaboud, m.() |
| 英文摘要 | A detailed study of multiparticle azimuthal correlations is presented using pp data at root s = 5.02 and 13 tev, and p+pb data at root s(nn) = 5.02 tev, recorded with the atlas detector at the cern large hadron collider. the azimuthal correlations are probed using four-particle cumulants c(n){4} and flow coefficients v(n){4} = (-c(n){4})(1/4) for n = 2 and 3, with the goal of extracting long-range multiparticle azimuthal correlation signals and suppressing the short-range correlations. the values of c(n){4} are obtained as a function of the average number of charged particles per event, < n-ch >, using the recently proposed two-subevent and three-subevent cumulant methods, and compared with results obtained with the standard cumulant method. the standard method is found to be strongly biased by short-range correlations, which originate mostly from jetswith a positive contribution to c(n){4}. the threesubevent method, on the other hand, is found to be least sensitive to short-range correlations. the three-subevent method gives a negative c(2){4}, and therefore a well-defined v(2){4}, nearly independent of < n-ch >, which implies that the long-range multiparticle azimuthal correlations persist to events with low multiplicity. furthermore, v(2){4} is found to be smaller than the v(2){2} measured using the two-particle correlation method, as expected for long-range collective behavior. finally, the measured values of v(2){4} and v(2){2} are used to estimate the number of sources relevant for the initial eccentricity in the collision geometry. the results based on the subevent cumulant technique provide direct evidence, in small collision systems, for a long-range collectivity involving many particles distributed across a broad rapidity interval. |
| WOS关键词 | LHC ; TEV ; ECCENTRICITIES |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear |
| 语种 | 英语 |
| WOS记录号 | WOS:000424747000006 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177985 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaboud, M. |
| 作者单位 | 1.Univ Adelaide, Dept Phys, Adelaide, SA, Australia 2.SUNY Albany, Dept Phys, Albany, NY 12222 USA 3.Univ Alberta, Dept Phys, Edmonton, AB, Canada 4.Ankara Univ, Dept Phys, Ankara, Turkey 5.Istanbul Aydin Univ, Istanbul, Turkey 6.TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey 7.CNRS, IN2P3, LAPP, Annecy Le Vieux, France 8.Univ Savoie Mont Blanc, Annecy Le Vieux, France 9.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA 10.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA |
| 推荐引用方式 GB/T 7714 | Aaboud, M.,Aad, G.,Abbott, B.,et al. Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p plus pb collisions with the atlas detector at the cern large hadron collider[J]. Physical review c,2018,97(2):25. |
| APA | Aaboud, M..,Aad, G..,Abbott, B..,Abdinov, O..,Abeloos, B..,...&Hallewell, G. D..(2018).Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p plus pb collisions with the atlas detector at the cern large hadron collider.Physical review c,97(2),25. |
| MLA | Aaboud, M.,et al."Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p plus pb collisions with the atlas detector at the cern large hadron collider".Physical review c 97.2(2018):25. |
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