Journal
NUCLEAR PHYSICS A
Volume 982, Issue -, Pages 511-514Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysa.2018.08.034
Keywords
-
Categories
Funding
- U.S. Department of Energy Office of Science, Office of Nuclear Physics [DE-FG02-92ER-40713]
Ask authors/readers for more resources
New results on global polarization of A hyperons in Au+Au collisions at root s(NN) = 200 GeV reveal non-zero signal on the order of a few tenths of a percent. Compared with lower energy results, the current measurement shows that the polarization decreases at higher collision energy, the trend being well reproduced by theoretical calculations. The polarization is found to be larger in more peripheral collisions, as well as in the in-plane than in the out-of-plane direction. The signal seems to depend on the asymmetry between positive and negative charge in each event, which may indicate an influence of the axial current induced by the magnetic field. In addition, the first measurement of a local polarization along the beam direction was performed. The results show a quadrupole modulation relative to the second-order event plane, as expected from the elliptic flow.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available