Mean pion multiplicities in Ar+Sc collisions
Abstract
Preliminary results for mean negatively charged pion multiplicities $\langle \pi^- \rangle$ using the $h^-$ method are presented for central Ar+Sc collisions at 13, 19, 30, 40, 75 and 150\textit{A} GeV/c beam momentum. The data were recorded by the NA61/SHINE detector at the CERN SPS. Starting with rapidity distributions ${dn}/{dy}$ the procedure of obtaining total multiplicities is presented. The mean number of wounded nucleons $\langle W\rangle$ extracted from the Glissando MC model is used to calculate the ratio $\langle \pi^- \rangle/\langle W\rangle.$ The results are compared to those from other experiments and their dependence on colliding systems and collision energy is discussed.
- Publication:
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arXiv e-prints
- Pub Date:
- November 2016
- DOI:
- 10.48550/arXiv.1611.02396
- arXiv:
- arXiv:1611.02396
- Bibcode:
- 2016arXiv161102396N
- Keywords:
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- High Energy Physics - Experiment;
- Nuclear Experiment
- E-Print:
- Presented at Critical Point and Onset of Deconfinement 2016 (CPOD2016), Wroc{\l}aw, Poland