| CMS Note | |
| Report number | CMS-CR-2014-064 |
| Title | Flow Phenomena at CMS |
| Author(s) | Wang, Quan (Kansas U.) |
| Publication | 2014 |
| Collaboration | CMS Collaboration |
| Imprint | 10 May 2014 |
| Number of pages | 5 |
| Presented at | 49th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 22 - 29 Mar 2014, pp.349-352 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | General |
| Abstract | Azimuthal angle correlation measurements of charged hadrons are presented in pPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV and PbPb collisions at $\sqrt{s_{NN}} = 2.76$ TeV. The second- ($v_2$) and third-order ($v_3$) Fourier harmonics are extracted using two-particle correlation and four-particle cumulant methods covering similar multiplicity ranges in pPb and PbPb over a wide range of pseudorapidity. A large four-particle $v_2$ as a function of multiplicity in pPb collisions is comparable to the PbPb system . Nearly identical two-particle correlation $v_3$ signals between the pPb and PbPb systems are observed. In ultra-central PbPb collisions, factorization of the Fourier harmonics is shown. The observed factorization breakdown is found to be consistent with the $p_T$ dependent event-by-event fluctuating event-plane angle in the hydrodynamic picture. |
| Other source | INSPIRE |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
Записът е създаден на 2014-06-10, последна промяна на 2018-06-07