Observation of Different Azimuthal Emission Patterns of K{sup +} and of K{sup -} Mesons in Heavy-Ion Collisions at 1-2A GeV

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.012301· OSTI ID:20696423

Uhlig, F; Foerster, A; Oeschler, H ^[1]; Boettcher, I; Kohlmeyer, B; Menzel, M ^[2]; Debowski, M ^[3]; Forschungszentrum Rossendorf, D-01314 Dresden ^[4]; Dohrmann, F; Naumann, L; Scheinast, W; Wagner, A ^[5]; Grosse, E ^[5]; Koczon, P; Laue, F; Schwab, E; Senger, P ^[6]; Shin, Y; Stroebele, H ^[7]; Sturm, C ^[1] ; Gesellschaft fuer Schwerionenforschung, D-64220 Darmstadt ^[4]; Surowka, G ^[6]

---

1. Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
2. Phillips Universitaet, D-35037 Marburg (Germany)
3. Jagiellonian University, PL-30059 Cracow (Poland)
4. Germany
5. Forschungszentrum Rossendorf, D-01314 Dresden (Germany)
6. Gesellschaft fuer Schwerionenforschung, D-64220 Darmstadt (Germany)
7. Johann Wolfgang Goethe-Universitaet, D-60325 Frankfurt (Germany)

Azimuthal distributions of {pi}{sup +}, K{sup +}, and K{sup -} mesons have been measured in Au+Au reactions at 1.5A GeV and Ni+Ni reactions at 1.93A GeV. In semicentral collisions at midrapidity, {pi}{sup +} and K{sup +} mesons are emitted preferentially perpendicular to the reaction plane in both collision systems. In contrast for K{sup -} mesons in Ni+Ni reactions, an in-plane elliptic flow was observed for the first time at these incident energies.

• OSTI ID: 20696423
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLIDING BEAMS
GEV RANGE 01-10
GOLD 197 BEAMS
GOLD 197 REACTIONS
GOLD 197 TARGET
KAONS MINUS
KAONS PLUS
NICKEL 64 REACTIONS
NICKEL 64 TARGET
PARTICLE PRODUCTION
PIONS PLUS
STATISTICAL MODELS