Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-05-23
Phys.Lett. B355 (1995) 27-31
Physics
Nuclear Physics
Nuclear Theory
12 pages + 4 postscript figures (uuencoded and included)
Scientific paper
10.1016/0370-2693(95)00763-B
Deuteron production in S and Pb induced collisions at beam energies of 200 and 160 AGeV is studied in the framework of the transport theoretical approach RQMD. Strong transverse flow invalidates the differential coalescence formula in momentum space. The transverse momentum integrated $d$ yields scale in a broad rapidity interval with the squared proton densities and inversely with the produced particle rapidity densities. This kind of scaling can be linked to constant relative sizes of nucleon and pion sources at freeze-out. With increasing projectile mass the nucleon source blows up stronger than the pion source. As a result, the scaled deuteron densities drop in central Pb+Pb collisions by 15 percent as compared to S induced reactions.
Kumar Sathish B.
Nagle James L.
Sorge Heinz
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