Nonperturbative computation of gluon minijet production in nuclear collisions at very high-energies
Sep, 199849 pages
Published in:
- Nucl.Phys.B 557 (1999) 237
e-Print:
- hep-ph/9809433 [hep-ph]
Report number:
- NBI-98-21,
- UALG-TP-98-6
Citations per year
Abstract:
At very high energies, in the infinite momentum frame and in light cone gauge, a hard scale proportional to the high parton density arises in QCD. In an effective theory of QCD at small , this scale is of order , where is simply related to the gluon density at higher rapidities. The ab initio real time evolution of small modes in a nuclear collision can be described consistently in the classical effective theory and various features of interest can be studied non-perturbatively. In this paper, we discuss results from a real time lattice computation of the production of gluon jets at very high energies. At very large transverse momenta, , our results match the predictions from pQCD based mini-jet calculations. Novel non-perturbative behaviour of the small modes is seen at smaller momenta . Gauge invariant energy-energy correlators are used to estimate energy distributions evolving in proper time.Note:
- 50 pages Latex, includes 7 figures, revised version, Nuclear Physics B, in press Report-no: NBI-98-21, UALG/TP/98-6
- Quark-gluon plasma
- Perturbative QCD jets
- Heavy-ion collisions
- nucleus nucleus: nuclear reaction
- jet: minijet
- gluon: jet
- nonperturbative
- quantum chromodynamics
- lattice field theory: effective action
- gluon: radiation
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