# From the chiral magnetic wave to the charge dependence of elliptic flow

Burnier, Y.; Kharzeev, D.E.; Liao, J.; Yee, H.-U. (2012). From the chiral magnetic wave to the charge dependence of elliptic flow (Unpublished)

 Preview
Text
1208.2537v1.pdf

The quark-gluon plasma formed in heavy ion collisions contains charged chiral fermions evolving in an external magnetic field. At finite density of electric charge or baryon number (resulting either from nuclear stopping or from fluctuations), the triangle anomaly induces in the plasma the Chiral Magnetic Wave (CMW). The CMW first induces a separation of the right and left chiral charges along the magnetic field; the resulting dipolar axial charge density in turn induces the oppositely directed vector charge currents leading to an electric quadrupole moment of the quark-gluon plasma. Boosted by the strong collective flow, the electric quadrupole moment translates into the charge dependence of the elliptic flow coefficients, so that $v_2(\pi^+) < v_2(\pi^-)$ (at positive net charge). Using the latest quantitative simulations of the produced magnetic field and solving the CMW equation, we make further quantitative estimates of the produced $v_2$ splitting and its centrality dependence. We compare the results with the available experimental data.

Working Paper

#### Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics

Burnier, Yannis

English

Esther Fiechter

#### Date Deposited:

04 Oct 2013 14:42

09 Nov 2016 10:50

1208.2537v1

#### BORIS DOI:

10.7892/boris.17039

#### URI:

https://boris.unibe.ch/id/eprint/17039 (FactScience: 224758)

#### Actions (login required)

 Edit item