Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-05-07
Phys.Lett. B393 (1997) 423-430
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages in TeX, 1 Fig. as a ps-file Preceding version contained in one place an erroneous factor of 2,which propagated to som
Scientific paper
10.1016/S0370-2693(96)01629-2
In an attempt to disentangle the effects of nuclear geometry from those of nuclear geometry we study dependence of longitudinal radius on nucleon numbers of colliding nuclei within a simple model of multiple nucleon- nucleon collisions.We discuss two approaches to resulting simple formula.In the former the data up to S-Au can be described by nuclear geometry at the price of two parameters,but R_L for Pb-Pb is significantly larger than geometry can accomodate, indicating an onset of a new dynamics. In the latter even collisions induced by lighter ions give evidence of some collective behaviour and the increase of R_L for Pb-Pb indicates again the onset of a new dynamics.
Pisut Jan
Pisutova Neva
Zavada Petr
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