NUKLEONIKA 2006, 51(Suppl. 3):s51-s54
Piotr Bożek
The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences,
152 Radzikowskiego Str., 31-342 Kraków, Poland
and Institute of Physics, Rzeszów University,
16 Rejtana Str., 35-959, Rzeszów, Poland
Correlations between opposite charge particles emitted in ultrarelativistic heavy-ion collisions
can be used as a measure of the transverse flow present at the time of the decoupling of the charged
pair. The width of the charge balance function in azimuthal angle depends on the transverse velocity
and the temperature of the emitting source. Asymmetry in the balance function between in plane
and out of plane emission can serve as a probe of the azimuthal asymmetry of the velocity field in
the source.