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Nuclear modification factor in intermediate-energy heavy-ion collisions
- Source :
- Phys. Lett. B 733, 105 (2014)
- Publication Year :
- 2014
-
Abstract
- The transverse momentum dependent nuclear modification factors (NMF), namely $R_{CP}$, is investigated for protons produced in Au + Au at 1$A$ GeV within the framework of the isospin-dependent quantum molecular dynamics (IQMD) model. It is found that the radial collective motion during the expansion stage affects the NMF at low transverse momentum a lot. By fitting the transverse mass spectra of protons with the distribution function from the Blast-Wave model, the magnitude of radial flow can be extracted. After removing the contribution from radial flow, the $R_{CP}$ can be regarded as a thermal one and is found to keep unitary at transverse momentum lower than 0.6 GeV/c and enhance at higher transverse momentum, which can be attributed to Cronin effect.<br />Comment: 8 pages, 5 figures; aceepted by Physics Letters B
- Subjects :
- Nuclear Theory
Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Lett. B 733, 105 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1404.4394
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2014.04.025