Medium modifications of the nucleon-nucleon elastic cross section in neutron-rich intermediate energy HICs

  • Several observables of unbound nucleons which are to some extent sensitive to the medium modifications of nucleon-nucleon elastic cross sections in neutron-rich intermediate energy heavy ion collisions are investigated. The splitting effect of neutron and proton effective masses on cross sections is discussed. It is found that the transverse flow as a function of rapidity, the Q_zz as a function of momentum, and the ratio of halfwidths of the transverse to that of longitudinal rapidity distribution R_t/l are very sensitive to the medium modifications of the cross sections. The transverse momentum distribution of correlation functions of two-nucleons does not yield information on the in-medium cross section.

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Author:Qingfeng LiORCiD, Zhuxia Li, Sven SoffORCiD, Marcus BleicherORCiDGND, Horst StöckerORCiDGND
ArXiv Id:
Document Type:Preprint
Date of Publication (online):2006/05/10
Year of first Publication:2006
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/05/10
Page Number:14
PACS numbers: 25.70.-z, 24.10.Lx, 25.75.-q ; Preprint, später in Journal of Physics G: Nuclear and Particle Physics, 32.2006, S.407-416
Source:, J.Phys. G32 (2006) 407-416
Institutes:Physik / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht