Journalartikel

Jahr der Veröffentlichung: 2017

Zeitschrift: Physical Review C

Bandnummer: 95

Heftnummer: 3

ISSN: 2469-9985

eISSN: 2469-9993

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.95.034911

Verlag: American Physical Society

Abstract: 
It is proposed to identify a strong electric field-created during relativistic collisions of asymmetric nuclei-via the observation of pseudorapidity and transverse momentum distributions of hadrons with the same mass but opposite charge. The results of detailed calculations within the parton-hadron string dynamics (PHSD) approach for the charge-dependent directed flow v(1) are presented for semicentral Cu+Au collision at root S-NN = 200 GeV incorporating the inverse Landau-Pomeranchuk-Migdal (iLPM) effect, which accounts for a delay in the electromagnetic interaction with the charged degrees of freedom. By including the iLPM effect, we achieve a reasonable agreement of the PHSD results for the charge splitting in v(1)(p(T)) in line with the recent measurements by the STAR Collaboration for Cu+Au collisions at root s(NN) = 200 GeV while an instant appearance and coupling of electric charges at the hard collision vertex overestimates the splitting by about a factor of 10. We predict that the iLPM effect should practically disappear at energies of root s(NN) approximate to 9 GeV, which should lead to a significantly larger charge splitting of v1 at the future FAIR/NICA facilities.

Harvard-Zitierstil: Toneev, V., Voronyuk, V., Kolomeitsev, E. and Cassing, W. (2017) Directed flow in asymmetric nucleus-nucleus collisions and the inverse Landau-Pomeranchuk-Migdal effect, Physical Review C, 95(3), Article 034911. https://doi.org/10.1103/PhysRevC.95.034911

APA-Zitierstil: Toneev, V., Voronyuk, V., Kolomeitsev, E., & Cassing, W. (2017). Directed flow in asymmetric nucleus-nucleus collisions and the inverse Landau-Pomeranchuk-Migdal effect. Physical Review C. 95(3), Article 034911. https://doi.org/10.1103/PhysRevC.95.034911