Testing the Chiral Magnetic Effect with Central U+U collisions

Details Testing the Chiral Magnetic Effect with Central U+U collisions Testing the Chiral Magnetic Effect with Central U+U collisions

2010-06-05

arxiv.org/abs/1006.1020v2

Phys.Rev.Lett.105:172301,2010

Physics

Nuclear Physics

Nuclear Theory

Latex, 5 pages, 4 figures. 2 more references added. No change to figures or results. As published in Phys. Rev. Lett. 105, 172

Scientific paper

10.1103/PhysRevLett.105.172301

A quark interaction with topologically nontrivial gluonic fields, instantons and sphalerons, violates \P~ and \CP~ symmetry. In the strong magnetic field of a noncentral nuclear collision such interactions lead to the charge separation along the magnetic field, the so-called chiral magnetic effect (CME). Recent results from the STAR collaboration on charge dependent correlations are consistent with theoretical expectations for CME but may have contributions from other effects, which prevents definitive interpretation of the data. Here I propose to use central body-body $U+U$ collisions to disentangle correlations due to CME from possible background correlations due to elliptic flow. Further more quantitative studies can be performed with collision of isobaric beams.

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