R. Akers et al., INVESTIGATION OF THE STRING EFFECT USING FINAL-STATE PHOTONS, Zeitschrift fur Physik. C, Particles and fields, 68(4), 1995, pp. 531-540
The string effect in QCD is investigated using data from the OPAL dete
ctor at LEP. By comparing the charged particle flow in three-jet multi
hadronic events with that in events with two jets and a hard isolated
photon, the sensitivity to particular models is reduced. A comparison
with various Monte Carlo models is presented. The difference in partic
le flows in the interquark region is found to be well reproduced by a
leading order calculation of soft gluon emission, in the spirit of the
Local Parton Hadron Duality hypothesis.