تقرير
Heavy quark transport at RHIC and LHC
| العنوان: | Heavy quark transport at RHIC and LHC |
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| المؤلفون: | Lang, Thomas, van Hees, Hendrik, Steinheimer, Jan, Yan, Yu-Peng, Bleicher, Marcus |
| سنة النشر: | 2012 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | We calculate the heavy quark evolution in heavy ion collisions and show results for the elliptic flow $v_2$ as well as the nuclear modification factor $R_{AA}$ at RHIC and LHC energies. For the calculation we implement a Langevin approach for the transport of heavy quarks in the UrQMD (hydrodynamics + Boltzmann) hybrid model. As drag and diffusion coefficients we use a Resonance approach for elastic heavy-quark scattering and assume a decoupling temperature of the charm quarks from the hot medium of $130\,\text{MeV}$. At RHIC energies we use a coalescence approach at the decoupling temperature for the hadronization of the heavy quarks to D-mesons and B-mesons and a sub-following decay to heavy flavor electrons using PYTHIA. At LHC we use an additional fragmentation mechanism to account for the higher transverse momenta reached at higher collision energies. Comment: 5 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1208.1643, arXiv:1211.6912 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1742-6596/426/1/012032 |
| URL الوصول: | http://arxiv.org/abs/1212.0696 |
| رقم الأكسشن: | edsarx.1212.0696 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1742-6596/426/1/012032 |
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