Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions

Details Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions

2011-11-08

arxiv.org/abs/1111.1949v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures, new comments in section 3, to appear in Phys. Lett. B

Scientific paper

We show that fluctuating proton positions in the colliding nuclei generate, on the event-by-event basis, very strong magnetic and electric fields in the direction both parallel and perpendicular to the reaction plane. The magnitude of E and B fields in each event is of the order of m_pi^2 \approx 10^18 Gauss. Implications on the observation of electric dipole in heavy ion collisions is discussed, and the possibility of measuring the electric conductivity of the hot medium is pointed out.

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