Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-07-24
Nucl.Phys. A723 (2003) 249-268
Physics
High Energy Physics
High Energy Physics - Phenomenology
text in LaTex, 4 figures in PS
Scientific paper
We derive the inclusive transverse spectrum of minijets in nuclear collisions at very high energies by assuming that the nuclear S-matrix factorizes into a product of elastic S-matrices for elementary partonic collisions. Interference effects and, in particular, the contribution of loop diagrams are fully taken into account in the derivation of the spectrum, which is shown to coincide with the result earlier obtained by superposing the elementary interactions incoherently. A quantitative analysis confirms that the deformation induced by multiple collsions is a large effect at RHIC and LHC energies, for transverse momenta ~ 20 GeV.
Braun Mikhail A.
Ferreiro Elena G.
Pajares Carlos
Treleani Daniele
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