Bose-Einstein correlations between like-charge pions are studied in hadroni
c final states produced by e(+)e(-) annihilations at center-of-mass energie
s of 172 and 183 GeV. Three event samples are studied, each dominated by on
e of the processes W+W- --> q (q) over bar l (v) over bar i, W+W- --> q (q)
over bar q (q) over bar, or (Z(0)/gamma)* --> q (q) over bar. After demons
trating the existence of Bose-Einstein correlations in W decays, an attempt
is made to determine Bose-Einstein correlations for pions originating fron
t the same W boson and from different W bosons, as well as for pions from (
Z(0)/gamma)* --> q (q) over bar events. The following results are obtained
for the individual chaoticity parameters lambda, assuming a common source r
adius R:
lambda(same) = 0.63+/- 0.19 +/- 0.14
lambda(diff) = 0.22 +/- 0.53 +/- 0.14
lambda(Z*) = 0.47 +/- 0.11 +/- 0.08
R = 0.92 =/- 0.09 +/- 0.09 fm
In each case, the first error is statistical and the second is sq systemati
c. At the current level of statistical precision it is not established whet
her Bose-Einstein correlations, between pions from different W bosons exist
or not.