Eur. Phys. J. A (2017) 53: 161
https://doi.org/10.1140/epja/i2017-12349-7

Regular Article - Theoretical Physics

Higher-order anisotropies in the blast-wave model: Disentangling flow and density field anisotropies

¹ Czech Technical University in Prague, FNSPE, Břehová 7, 11519, Prague 1, Czech Republic
² Comenius University, FMPI, Mlynská Dolina F1, 84248, Bratislava, Slovakia
³ Univerzita Mateja Bela, FPV, Tajovského 40, 97401, Banská Bystrica, Slovakia
⁴ Eötvös Loránd University, Pázmány P. s. 1/a, H-1117, Budapest, Hungary

^* e-mail: boris.tomasik@cern.ch

Received: 16 February 2017
Accepted: 14 July 2017
Published online: 10 August 2017

Abstract

We formulate a generalisation of the blast-wave model which is suitable for the description of higher-order azimuthal anisotropies of the hadron production. The model includes anisotropy in the density profile as well as an anisotropy in the transverse expansion velocity field. We then study how these two kinds of anisotropies influence the single-particle distributions and the correlation radii of two-particle correlation functions. Particularly we focus on the third-order anisotropy and consideration is given averaging over different orientations of the event plane.