Hyperons polarization in heavy-ion collisions
1 Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028 Kishinev, Moldova
2 Joint Institute for Nuclear Research, 141980 Dubna, Russia
3 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Shosse 31, 115409 Moscow, Russia
4 Dubna International University, 141980, Dubna, Russia
Published online: 27 March 2017
We study the structure of vorticity and hydrodynamic helicity fields in peripheral heavy-ion collisions using the kinetic Quark-Gluon Strings Model. The angular momentum which is a source of P-odd observables is preserved within this model with a good accuracy. We observe the formation of specific toroidal structures of vorticity field. Their existence is mirrored in the polarization of hyperons of the percent order. The observed qualitative energy dependence of polarization was predicted earlier and is quantified now.
© The Authors, published by EDP Sciences, 2017
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