کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8189739 | 1528847 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Symmetry energy and pion production in the Boltzmann-Langevin approach
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Symmetry energy and pion production in the Boltzmann-Langevin approach Symmetry energy and pion production in the Boltzmann-Langevin approach](/preview/png/8189739.png)
چکیده انگلیسی
Based on the improved isospin-dependent Boltzmann-Langevin model which incorporates the dynamical fluctuations, we study the Ï production in central heavy ion collisions at different incident energies from 250 to 1200AMeV. It is found that the Ï multiplicity is sensitive to the nuclear equation of state. At Ï subthreshold energy, the fluctuations have a larger effect on the Ï multiplicity. The Ïâ/Ï+ ratios as a probe of nuclear symmetry energy are calculated with different stiffness of symmetry energy. The results favor a supersoft symmetry energy of the potential term in comparison with the FOPI data, which supports the one obtained by the usual Boltzmann-Uehling-Uhlenbeck model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 718, Issues 4â5, 29 January 2013, Pages 1510-1514
Journal: Physics Letters B - Volume 718, Issues 4â5, 29 January 2013, Pages 1510-1514
نویسندگان
Wen-Jie Xie, Jun Su, Long Zhu, Feng-Shou Zhang,