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Azimuthal asymmetry of neutral pion emission in Au+Au reactions at 1 GeV/nucleon

Authors :
James Ritman
Y. Schutz
A. E. Raschke
H. P. Braak
R. Santo
J. Mösner
W. Kühn
A. Gobbi
Metag
U. Sodan
O. Schwalb
M. Pfeiffer
R. Kotte
S. Hlavac
M. Notheisen
R.S. Simon
K. Teh
D. Wohlfarth
W. Neubert
R.W. Ostendorf
T. Wienold
L.B. Venema
Herbert Löhner
Michal Sumbera
N. Brummund
R. Holzmann
F. D. Berg
N. Herrmann
K. D. Hildenbrand
Rudolf Siemssen
R. W. Novotny
H. W. Wilschut
J. P. Wessels
Research unit Medical Physics
Grand Accélérateur National d'Ions Lourds (GANIL)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physical Review Letters, 71(6), 835-838. AMER PHYSICAL SOC, Physical Review Letters, Physical Review Letters, 1993, 71, pp.835-838. ⟨10.1103/PhysRevLett.71.835⟩
Publication Year :
1993

Abstract

The azimuthal angle distributions of neutral pions at midrapidity from Au+Au reactions at 1 GeV/nucleon incident energy have been measured. An enhanced emission of [pi][sup 0]'s perpendicular to the reaction plane is observed. The azimuthal asymmetry is dependent on the [pi][sup 0] momentum: the [pi][sup 0] spectrum perpendicular to the reaction plane is harder than in the reaction plane. The strength of the observed asymmetry appears to be more pronounced for [pi][sup 0] than for charged particles and neutrons.

Details

Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters, 71(6), 835-838. AMER PHYSICAL SOC, Physical Review Letters, Physical Review Letters, 1993, 71, pp.835-838. ⟨10.1103/PhysRevLett.71.835⟩
Accession number :
edsair.doi.dedup.....cd3fdcf9cba40977d7a8b913285fe9ee
Full Text :
https://doi.org/10.1103/PhysRevLett.71.835⟩