Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
| dc.contributor.author | Aslanoglou, X. | en |
| dc.date.accessioned | 2015-11-24T18:40:13Z | |
| dc.date.available | 2015-11-24T18:40:13Z | |
| dc.identifier.issn | 0370-2693 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/17586 | |
| dc.rights | Default Licence | - |
| dc.subject | CMS | en |
| dc.subject | Physics | en |
| dc.subject | Heavy ions | en |
| dc.title | Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions | en |
| heal.abstract | Measurements of two- and four-particle angular correlations for charged particles emitted in pPb collisions are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated luminosity of approximately 31 nb ? 1 , were collected during the 2013 LHC pPb run at a nucleon nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. The results are compared to 2.76 TeV semi-peripheral PbPb collision data, collected during the 2011 PbPb run, covering a similar range of particle multiplicities. The observed correlations are characterized by the near-side ( | Δ ? | ? 0 ) associated pair yields and the azimuthal anisotropy Fourier harmonics ( v n ). The second-order ( v 2 ) and third-order ( v 3 ) anisotropy harmonics are extracted using the two-particle azimuthal correlation technique. A four-particle correlation method is also applied to obtain the value of v 2 and further explore the multi-particle nature of the correlations. Both associated pair yields and anisotropy harmonics are studied as a function of particle multiplicity and transverse momentum. The associated pair yields, the four-particle v 2 , and the v 3 become apparent at about the same multiplicity. A remarkable similarity in the v 3 signal as a function of multiplicity is observed between the pPb and PbPb systems. Predictions based on the color glass condensate and hydrodynamic models are compared to the experimental results. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | http://dx.doi.org/10.1016/j.physletb.2013.06.028 | - |
| heal.identifier.secondary | http://www.sciencedirect.com/science/article/pii/S0370269313005030 | - |
| heal.journalName | Physics Letters B | en |
| heal.journalType | peer reviewed | - |
| heal.publicationDate | 2013 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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