Transverse momenta of helium fragments in gold fragmentation at 10.6 GeV/nucleon
M. L. Cherry, Louisiana State University
A. Da̧browska, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
P. Deines-Jones, Louisiana State University
A. J. Dubinina, Alikhanov Institute for Theoretical and Experimental Physics
R. Hołyński, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
W. V. Jones, Louisiana State University
A. Olszewski, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
K. Sengupta, Louisiana State University
V. A. Smirnitski, Alikhanov Institute for Theoretical and Experimental Physics
M. Szarska, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
A. Trzupek, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
C. J. Waddington, University of Minnesota Twin Cities
J. P. Wefel, Louisiana State University
B. Wilczyńska, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
H. Wilczyński, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
W. Wolter, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
B. Wosiek, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
K. Woźniak, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Abstract
The transverse momentum (pt) distributions of helium fragments from gold fragmentation on different nuclei of nuclear emulsion have been measured and a clear increase of average pt with target mass is seen. The pt distributions can be parameterized by a sum of three exponential functions of the form ∼ exp(- pt2/Bi). The differences in pt distributions in interactions on different targets can be explained by different contributions of the three exponential functions. These contributions depend on the projectile breakup in the collision, and for a given degree of the projectile breakup do not depend on the target mass. © Springer-Verlag 1997.
