Soft probes of the QGP: Pb-Pb and p-Pb CMS results
Apstrakt
The CMS collaboration measured second-order single-particle anisotropy, v(2), using 2-, 4-, 6- and 8-particle correlations as well as the Lee-Yang Zero method in pPb and PbPb collisions. This result shows that the correlations found in the small and highly asymmetric pPb collision system are long-range and have a many-particle origin. Deeper insight into the nature of these correlations is achieved by studying the factorization breaking effect which appears trough a PT-dependent event plane angle, caused by the initial-state fluctuations. The effect is largest for the most central PbPb collisions (up to 20%), while it is on the level of few percent for peripheral PbPb and high-multiplicity pPb events. Hydrodynamics models which include a PT-dependent event plane angle semi-quantitatively describe the data and suggest that the effect is mainly determined by the initial-state conditions.
Ključne reči:
flow / CMS / two-particle correlations / multi-particle-correlations / factorization breakingIzvor:
Nuclear and Particle Physics Proceedings, 2016, 273, 1565-1570Napomena:
- 37th International Conference on High Energy Physics (ICHEP), Jul 02-09, 2014, Valencia, Spain
DOI: 10.1016/j.nuclphysbps.2015.09.253
ISSN: 2405-6014; 1873-3832
WoS: 000390295200251
Scopus: 2-s2.0-84973111585
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Milošević, Jovan AU - CMS Collaboration PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7141 AB - The CMS collaboration measured second-order single-particle anisotropy, v(2), using 2-, 4-, 6- and 8-particle correlations as well as the Lee-Yang Zero method in pPb and PbPb collisions. This result shows that the correlations found in the small and highly asymmetric pPb collision system are long-range and have a many-particle origin. Deeper insight into the nature of these correlations is achieved by studying the factorization breaking effect which appears trough a PT-dependent event plane angle, caused by the initial-state fluctuations. The effect is largest for the most central PbPb collisions (up to 20%), while it is on the level of few percent for peripheral PbPb and high-multiplicity pPb events. Hydrodynamics models which include a PT-dependent event plane angle semi-quantitatively describe the data and suggest that the effect is mainly determined by the initial-state conditions. C3 - Nuclear and Particle Physics Proceedings T1 - Soft probes of the QGP: Pb-Pb and p-Pb CMS results VL - 273 SP - 1565 EP - 1570 DO - 10.1016/j.nuclphysbps.2015.09.253 ER -
@conference{ author = "Milošević, Jovan and CMS Collaboration", year = "2016", abstract = "The CMS collaboration measured second-order single-particle anisotropy, v(2), using 2-, 4-, 6- and 8-particle correlations as well as the Lee-Yang Zero method in pPb and PbPb collisions. This result shows that the correlations found in the small and highly asymmetric pPb collision system are long-range and have a many-particle origin. Deeper insight into the nature of these correlations is achieved by studying the factorization breaking effect which appears trough a PT-dependent event plane angle, caused by the initial-state fluctuations. The effect is largest for the most central PbPb collisions (up to 20%), while it is on the level of few percent for peripheral PbPb and high-multiplicity pPb events. Hydrodynamics models which include a PT-dependent event plane angle semi-quantitatively describe the data and suggest that the effect is mainly determined by the initial-state conditions.", journal = "Nuclear and Particle Physics Proceedings", title = "Soft probes of the QGP: Pb-Pb and p-Pb CMS results", volume = "273", pages = "1565-1570", doi = "10.1016/j.nuclphysbps.2015.09.253" }
Milošević, J.,& CMS Collaboration. (2016). Soft probes of the QGP: Pb-Pb and p-Pb CMS results. in Nuclear and Particle Physics Proceedings, 273, 1565-1570. https://doi.org/10.1016/j.nuclphysbps.2015.09.253
Milošević J, CMS Collaboration. Soft probes of the QGP: Pb-Pb and p-Pb CMS results. in Nuclear and Particle Physics Proceedings. 2016;273:1565-1570. doi:10.1016/j.nuclphysbps.2015.09.253 .
Milošević, Jovan, CMS Collaboration, "Soft probes of the QGP: Pb-Pb and p-Pb CMS results" in Nuclear and Particle Physics Proceedings, 273 (2016):1565-1570, https://doi.org/10.1016/j.nuclphysbps.2015.09.253 . .