Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-05-04
Mod.Phys.Lett. A8 (1993) 1901-1908
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, LATEX, UCLA/93/TEP/10
Scientific paper
We consider isospin correlations of pions produced in a relativistic nuclear collision, using an effective theory of the chiral order parameter. Our theory has (1+1) Lorentz invariance as appropriate for the central rapidity region. We argue that in certain regions of space correlations of the chiral order parameter are described by the fixed point of the (1+1) WZNW model. The corresponding anomalous dimension determines scaling of the probability to observe a correlated cluster of pions with the size of this cluster in rapidity. Though the maximal size of clusters for which this scaling is applicable is cut off by pion mass, such clusters can still include sufficiently many particles to make the scaling observable.
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