The restoration of chiral symmetry and its subsequent breaking through
a phase transition has been predicted to create regions of Disoriente
d Chiral Condensates (DCC). This phenomenon has been predicted to caus
e anomalous fluctuations in th; relative production of charged and neu
tral plans in high-energy hadronic and nuclear collisions. The WA98 ex
periment has been used to measure charged and photon multiplicities in
the central region of 158 AGeV Pb + Pb collisions at the CERN SPS. In
a sample of 212646 events, no clear DCC signal can be distinguished.
Using a simple DCC model. we have set a 90% C.L. upper limit on the ma
ximum DCC production allowed by the data. (C) 1998 Elsevier Science B.
V.