We present a measurement of the transverse momentum with
respect to the jet axis (k_T) of particles in jets produced in p anti-p
collisions at s**(1/2) ñ.96 TeV. Results are obtained for charged
particles within a cone of opening angle 0.5 radians around the jet
axis in events with dijet invariant masses between 66 and 737 GeV/c2.
The experimental data are compared to theoretical predictions obtained
for fragmentation partons within the framework of resumed perturbative
QCD using the modified leading log and next-to-modified leading
log approximations. The comparison shows that trends in data are
successfully described by the theoretical predictions, indicating that
the perturbative QCD stage of jet fragmentation is dominant in shapi+ng
basic jet characteristics.
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Updated: Tuesday, 2009 July 07 14:59:58 CDT automatically from input from carol picciolo