Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-12-12
Physics
High Energy Physics
High Energy Physics - Phenomenology
6pages, 3 figures, 1 table; title changed by editor, references updated
Scientific paper
In terms of the hadron-string-dynamics (HSD) approach we investigate the correlation function in the azimuthal angle $\psi$ of charged hadrons that is expected to be sensitive to a signal of local strong parity violation. Our analysis of Au+Au collisions is based on the recent STAR data within the RHIC Beam-Energy-Scan (BES) program. The HSD model reasonably reproduces STAR data for $\sqrt{s_{NN}}=$7.7 GeV, while there are some deviations from the experiment at the collision energy of 11.5 GeV and an increase of deviations between theory and experiment at $\sqrt{s_{NN}}=$39 GeV. For reference, the results for $\sqrt{s_{NN}}=$ 200 GeV are given as well. The role of the retarded electromagnetic field is discussed and a compensation effect for the action of its electric and magnetic components is pointed out. We conclude that the recent RHIC BES data at $\sqrt{s_{NN}}=$7.7 and 11.5 GeV can be understood on the hadronic level without involving the idea of a strong parity violation; however, at $\sqrt{s_{NN}}\sim$40 GeV and above one needs to take into consideration explicit partonic (quark-qluon) degrees-of-freedom for a proper treatment of the dynamics.
Bratkovskaya Elena L.
Cassing Wolfgang
Konchakovski V. P.
Voloshin Sergei A.
Voronyuk V.
No associations
LandOfFree
Theoretical analysis of a possible observation of the chiral magnetic effect in Au + Au collisions within the RHIC beam energy scan program does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Theoretical analysis of a possible observation of the chiral magnetic effect in Au + Au collisions within the RHIC beam energy scan program, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theoretical analysis of a possible observation of the chiral magnetic effect in Au + Au collisions within the RHIC beam energy scan program will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-709157