# Even anisotropic-flow harmonics are from Venus, odd ones are from Mars

@inproceedings{Bachmann2022EvenAH, title={Even anisotropic-flow harmonics are from Venus, odd ones are from Mars}, author={Benedikt Bachmann and Nicolas Borghini and Nina Feld and Hendrik Roch}, year={2022} }

We test the ability of the “escape mechanism” to create the anisotropic ﬂow observed in high-energy nuclear collisions. We compare the ﬂow harmonics v n in the few-rescatterings regime from two types of transport simulations, with 2 → 2 and 2 → 0 collision kernels respectively, and from analytical calculations neglecting the gain term of the Boltzmann equation. We ﬁnd that the even ﬂow harmonics are similar in the three approaches, while the odd harmonics diﬀer signiﬁcantly.

## 2 Citations

### Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers

- PhysicsThe European Physical Journal C
- 2022

We investigate the early time development of the anisotropic transverse flow and spatial eccentricities of a fireball with various particle-based transport approaches using a fixed initial condition.…

### Opacity dependence of transverse flow, pre-equilibrium and applicability of hydrodynamics in heavy-ion collisions

- Physics
- 2022

We evaluate the full opacity dependence of collective ﬂow in high-energy heavy-ion collisions within a microscopic kinetic description based on the Boltzmann equation in the conformal relaxation time…

## References

SHOWING 1-10 OF 40 REFERENCES

### Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models

- Physics
- 2016

### Anisotropic flow far from equilibrium

- Physics
- 2011

We compute analytically the anisotropic flow in an expanding mixture of several species of relativistic massive particles. We find that a single collision per particle on average already leads to…

### Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers

- PhysicsThe European Physical Journal C
- 2022

We investigate the early time development of the anisotropic transverse flow and spatial eccentricities of a fireball with various particle-based transport approaches using a fixed initial condition.…

### Early time behavior of spatial and momentum anisotropies in a kinetic approach to nuclear collisions

- PhysicsThe European Physical Journal C
- 2022

We derive a general formula for the early time dependence of a phase space distribution evolving according to the kinetic Boltzmann equation. Assuming that the early evolution of the system created…

### Development of transverse flow at small and large opacities in conformal kinetic theory

- PhysicsPhysical Review D
- 2022

We employ an effective kinetic description, based on the Boltzmann equation in the relaxation time approximation, to study the space-time dynamics and development of transverse flow of small and…

### Collective flow in single-hit QCD kinetic theory

- PhysicsJournal of High Energy Physics
- 2021

Abstract
Motivated by recent interest in collectivity in small systems, we calculate the harmonic flow response to initial geometry deformations within weakly coupled QCD kinetic theory using the…

### Fluctuations of anisotropic flow from the finite number of rescatterings in a two-dimensional massless transport model

- Mathematics, PhysicsThe European Physical Journal C
- 2021

We investigate the fluctuations of anisotropic transverse flow due to the finite number of scatterings in a two-dimensional system of massless particles. Using a set of initial geometries from a…

### Searching for small droplets of hydrodynamic fluid in proton–proton collisions at the LHC

- Physics
- 2020

In this paper, we investigate the hydrodynamic collectivity in proton-proton collisions at s=\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts}…

### Opacity dependence of elliptic flow in kinetic theory

- PhysicsThe European Physical Journal C
- 2019

The observation of large azimuthal anisotropies vn\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy}…