Plots obtained with PYQUEN1_0 for Pb-Pb collisions at
sqrt{s}=5.5 A TeV (jet cone size R=0.5)
L-dependence (left) and E-dependence (right) of
quark energy loss
BDMS limits: dE~L**2,ln(E) at L->0;
dE~L,sqrt{E} at L->00
Azimuthal dependence of parton path length
(left) and quark energy loss (right)
Azimuthal anisotropy of path length for
non-central collisions results in azimuthal anisotropy of energy loss
Distribution over number of in-medium emitted
gluons per jet (left) and their energy spectrum (right) for
Et(initial parton)>100 GeV (b=0)
PYQUEN -
vacuum shower before in-medium radiation,
PYQUENm - vacuum shower after in-medium
radiation
Reproducing BDMS spectrum
Distribution over energy loss of single
parton (left) and of jet out of cone R=0.5 (right) for Et(initial parton)>100
GeV (b=0)
PYQUEN - vacuum shower before
in-medium radiation, PYQUENm - vacuum
shower after in-medium radiation
Spectrum of medium-induced partonic energy loss
is rather wide and peaked on zero and on initial parton energy;
Spectrum of medium-induced jet energy loss (out of cone R=0.5) has maximum and
sensitive to treatment of vacuum shower
Jet fragmentation function (longitudinal
profile) for Et(initial parton)>100 GeV (left) and for Et(final jet)>100 GeV
(right)(b=0)
PYQUEN - vacuum shower before
in-medium radiation, PYQUENm - vacuum
shower after in-medium radiation
Low-z enhancement and high-z suppression (less
pronounced for triggering on final jet energy due to "jet energy rescaling", and
sensitive to treatment of vacuum shower in this case)
Jet fragmentation function (transverse profile)
for Et(initial parton)>100 GeV (left) and for Et(final jet)>100 GeV (right)(b=0)
PYQUEN - vacuum shower before in-medium
radiation, PYQUENm - vacuum shower after
in-medium radiation
Kt-softening is clearly visible only in the case
without triggering on final jet energy
Back to PYQUEN web-page
Last update: October 1, 2004 by Igor Lokhtin