Repozytorium Uniwersytetu Jagiellońskiego
Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at \sqrt{s_{NN}}=2.76 TeV with the ATLAS detector
Opis pozycji
| tytuł | Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at \sqrt{s_{NN}}=2.76 TeV with the ATLAS detector |
| autor | Pałka Marek 
|
| współtwórca | Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2887 |
| instytucja sprawcza | ATLAS Collaboration |
| tytuł czasopisma | The European Physical Journal. C, Particles and Fields |
| tom | 74 |
| numer | 11 |
| data wydania | 2014 |
| article ID | 3157 |
| ISSN |
1434-6044 |
| eISSN |
1434-6052 |
| DOI | |
| język | angielski |
| język czasopisma | angielski |
| abstrakt w j. angielskim | ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at \sqrt{s_{NN}}=2.76 TeV are shown using a dataset of approximately 7 \mu b^{-1} are shown using a dataset of approximately 7 < p_{T} < 20 GeV and in the pseudorapidity range \left | \eta \right |<2.5. The anisotropy is characterized by the Fourier coefficients, v_{n}, of the charged-particle azimuthal angle distribution for n=2–4. The Fourier coefficients are evaluated using multi-particle cumulants calculated with the generating function method. Results on the transverse momentum, pseudorapidity and centrality dependence of the v_{n} coefficients are presented. The elliptic flow, v_{2}, is obtained from the two-, four-, six- and eight-particle cumulants while higher-order coefficients, v_{3] and v_{4}, are determined with two- and four-particle cumulants. Flow harmonics v_{n} measured with four-particle cumulants are significantly reduced compared to the measurement involving two-particle cumulants. A comparison to_{n} measurements obtained using different analysis methods and previously reported by the LHC experiments is also shown. Results of measurements of flow fluctuations evaluated with multi-particle cumulants are shown as a function of transverse momentum and the collision centrality. Models of the initial spatial geometry and its fluctuations fail to describe the flow fluctuations measurements. |
| liczba arkuszy wydawniczych | 2 |
| wydział:instytut/zakład/katedra | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| typ | artykuł w czasopiśmie |
| podtyp | artykuł |
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