ar X iv : n uc l - th / 9 80 20 74 v 1 2 4 Fe b 19 98 Partial U A ( 1 ) Restoration from Bose - Einstein Correlations
نویسندگان
چکیده
The effective intercept parameter of the two-pion Bose-Einstein Correlation function, λ * , is found to be sensitive to partial restoration of U A (1) symmetry in ultra-relativistic nuclear collisions. An increase in the yield of the η ′ meson, proposed earlier as a signal of partial U A (1) restoration, is shown to create a " hole " in the low p t region of λ *. A comparison with NA44 data [1] for central S+Pb collisions at 200 AGeV is made and implications for forthcoming heavy ion experiments are discussed.
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