Kinetic freeze-out, particle spectra, and harmonic-flow coefficients from mode-by-mode hydrodynamics

• Verfasst von: Flörchinger, Stefan [VerfasserIn]
• Titel: Kinetic freeze-out, particle spectra, and harmonic-flow coefficients from mode-by-mode hydrodynamics
• Verf.angabe: Stefan Floerchinger and Urs Achim Wiedemann
• E-Jahr: 2014
• Jahr: 31 March 2014
• Umfang: 17 S.
• Fussnoten: Gesehen am 27.11.2017
• Titel Quelle: Enthalten in: Physical review / D
• Ort Quelle: [S.l.] : Soc., 1970
• Jahr Quelle: 2014
• Band/Heft Quelle: 89(2014,3) Artikel-Nummer 034914, 17 Seiten
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevC.89.034914
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565744748

Abstract

The kinetic freeze-out for the hydrodynamical description of relativistic heavy-ion collisions is discussed using a background-fluctuation splitting of the hydrodynamical fields. For a single event, the particle spectrum, or its logarithm, can be written as the sum of the background part that is symmetric with respect to azimuthal rotations and longitudinal boosts and a part containing the contribution of fluctuations or deviations from the background. Using a complete orthonormal basis to characterize the initial state allows one to write the double differential harmonic-flow coefficients determined by the two-particle correlation method as matrix expressions involving the initial fluid correlations. We discuss the use of these expressions for a mode-by-mode analysis of fluctuating initial conditions in heavy-ion collisions.