Ion induced quark-gluon implosion

Details Ion induced quark-gluon implosion Ion induced quark-gluon implosion

2002-12-21

arxiv.org/abs/nucl-th/0212094v2

Phys.Rev.Lett. 91 (2003) 022301

Physics

Nuclear Physics

Nuclear Theory

5 pages, final version, discussion of the signals of the new phase is expanded

Scientific paper

10.1103/PhysRevLett.91.022301

We investigate nuclear fragmentation in the central proton-nucleus and nucleus - nucleus collisions at the energies of LHC. We argue that within the semi-classical approximation because of fast increase with energy of cross sections of soft and hard interactions each nucleon is stripped in the average process off ``soft'' partons and fragments into a collection of leading quarks and gluons with large $p_t$. Valence quarks and gluons are streaming in the opposite directions when viewed in the c.m. of the produced system. The resulting pattern of the fragmentation of the colliding nuclei leads to an implosion of the quark and gluon constituents of the nuclei. The matter density produced at the initial stage in the nucleus fragmentation region is estimated to be $\geq$ 50 GeV/fm$^3$ at the LHC energies and probably $\geq$ 10 GeV/fm$^3$ at RHIC.

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