Beam energy dependence of charged pion ratio in ²⁸Si + In reactions

2014/09/11 by M. Sako, Sako, M., T. Murakami +27
Engineering · Physics and Astronomy · #Nuclear physics research studies #Particle accelerators and beam dynamics #Particle physics theoretical and experimental studies #nucl-ex

paper · pdf · doi:10.48550/arxiv.1409.3322

6 pages, 4 figures

arxiv created 2014/09/11 · arxiv updated 2014/09/12

Abstract

The double differential cross sections for ^natIn(²⁸Si, π^±) reactions are measured at 400, 600, and 800 MeV/nucleon. Both π⁺ and π^- are found to be emitted isotropically from a single moving source. The π^- / π⁺ yield ratio is determined as a function of the charged pion energy between 25 and 100 MeV. The experimental results significantly differ from the prediction of the standard transport model calculation using the code PHITS. This discrepancy suggests that more theoretical works are required to deduce firm information on the nuclear symmetry energy from the π^- / π⁺ yield ratio.

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