Abstract
Elliptic flow of ν and π 0 mesons emitted at midrapidity are studied in collisions of 1.9 A GeV 58Ni+58Ni and 2 A GeV 40Ca+natCa. The observed anisotropy corresponds to a negative elliptic flow signal for ν mesons, indicating a preferred emission perpendicular to the reaction plane. In contrast, only small azimuthal anisotropies are observed for π 0 mesons. This may indicate that ν mesons freeze out earlier from the central interaction region than pions.
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Taranenko, A., Kugler, A. & TAPS Collaboration. Elliptic flow of ν ands π 0 mesons in heavy-ion collisions at 2 A GeVmesons in heavy-ion collisions at 2 A GeV. Czech J Phys 50 (Suppl 4), 139–166 (2000). https://doi.org/10.1007/s10582-000-0050-9
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DOI: https://doi.org/10.1007/s10582-000-0050-9