Evidence for collectivity in pp collisions at the lhc
文献类型：期刊论文
| 作者 | Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2017-02-10 |
| 卷号 | 765页码:193-220 |
| 关键词 | Cms Physics Heavy ion Ridge Correlation Pp |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2016.12.009 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | Measurements of two- and multi-particle angular correlations in pp collisions at root s = 5, 7, and 13tev are presented as a function of charged-particle multiplicity. the data, corresponding to integrated luminosities of 1.0 pb(-1) (5 tev), 6.2 pb(-1) (7 tev), and 0.7 pb(-1) (13 tev), were collected using the cms detector at the lhc. the second-order (v(2)) and third-order (v(3)) azimuthal anisotropy harmonics of unidentified charged particles, as well as v(2) of k-s(0) and lambda/(lambda) over bar particles, are extracted from long-range two-particle correlations as functions of particle multiplicity and transverse momentum. for high-multiplicity pp events, a mass ordering is observed for the v(2) values of charged hadrons (mostly pions), k-s(0), and lambda/(lambda) over bar, with lighter particle species exhibiting a stronger azimuthal anisotropy signal below pt approximate to gev/c. for 13 tev data, the v(2) signals are also extracted from four- and six-particle correlations for the first time in pp collisions, with comparable magnitude to those from two-particle correlations. these observations are similar to those seen in ppb and pbpb collisions, and support the interpretation of a collective origin for the observed long-range correlations in high-multiplicity pp collisions. (c) 2016 the author. published by elsevier b.v. this is an open access article under the cc by license. |
| WOS关键词 | TRANSVERSE-MOMENTUM DEPENDENCE ; PROTON-PROTON ; FLOW ; PSEUDORAPIDITY ; MULTIPLICITY ; TEV |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000393627800025 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176750 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Khachatryan, V. |
| 作者单位 | 1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys OeAW, Vienna, Austria 3.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 4.Univ Antwerp, Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, Ghent, Belgium 8.Catholic Univ Louvain, Louvain La Neuve, Belgium 9.Univ Mons, Mons, Belgium 10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil |
| 推荐引用方式 GB/T 7714 | Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Evidence for collectivity in pp collisions at the lhc[J]. Physics letters b,2017,765:193-220. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Valencia, F. Vazquez.(2017).Evidence for collectivity in pp collisions at the lhc.Physics letters b,765,193-220. |
| MLA | Khachatryan, V.,et al."Evidence for collectivity in pp collisions at the lhc".Physics letters b 765(2017):193-220. |
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