Nuclear collective flow and charged-pion emission in Ne-nucleus collisions at E/A = 800 MeV.
PHYSICAL REVIEW LETTERS 1989;
62:1251-1254. [PMID:
10039622 DOI:
10.1103/physrevlett.62.1251]
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Abstract
Triple-differential cross sections of charged pions were measured for collisions of Ne projectiles at E/A = 800 MeV with NaF, Nb, and Pb targets. The reaction plane was estimated event by event from the light-baryon momentum distribution. For heavy targets, preferential emission of charged pions away from the interaction zone towards the projectile side was observed in the transverse direction. Such a preferential emission, which is not predicted by cascade calculations, may be attributed to a stronger pion absorption by the heavier spectator remnant.
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