Electric fields and chiral magnetic effect in Cu+Au collisions - INSPIRE

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Electric fields and chiral magnetic effect in Cu+Au collisions

Wei-Tian Deng
(
- Hua-Zhong U. Sci. Tech. and
- Fudan U.
)
,
Xu-Guang Huang
(
- Fudan U.
)

Nov 11, 2014

7 pages

Published in:

Phys.Lett.B 742 (2015) 296-302

Published: Mar 6, 2015

e-Print:

1411.2733 [nucl-th]

DOI:

10.1016/j.physletb.2015.01.050

View in:

ADS Abstract Service

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Abstract: (Elsevier)

The non-central Cu+Au collisions can create strong out-of-plane magnetic fields and in-plane electric fields. By using the HIJING model, we study the general properties of the electromagnetic fields in Cu+Au collisions at 200 GeV and their impacts on the charge-dependent two-particle correlator γq1q2=〈cos⁡(ϕ1+ϕ2−2ψRP)〉 (see main text for definition) which was used for the detection of the chiral magnetic effect (CME). Compared with Au+Au collisions, we find that the in-plane electric fields in Cu+Au collisions can strongly suppress the two-particle correlator or even reverse its sign if the lifetime of the electric fields is long. Combining with the expectation that if γq1q2 is induced by elliptic-flow driven effects we would not see such strong suppression or reversion, our results suggest to use Cu+Au collisions to test CME and understand the mechanisms that underlie γq1q2 .

Note:

V1: 7 pages, 8 figures. V2: Add 2 new figures. Published version

25.75.Ag
24.10.Jv
24.10.Lx
magnetic field: chiral
nucleus nucleus: scattering
correlation function: two-particle
effect: magnetic
heavy ion: scattering
electric field
electromagnetic field

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Figures(12)

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