کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5494172 | 1527068 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Beam-Energy and Centrality Dependence of Directed Flow of Identified Particles
ترجمه فارسی عنوان
انرژی پرتو و وابستگی مرکزی جریان مستقیم ذرات شناسایی شده
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
چکیده انگلیسی
These proceedings present directed flow (v1) measurements in Au+Au collisions from STAR's Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider, for p, pâ¾, Î, Îâ¾, K±, KS0 and ϱ. At intermediate centrality, protons show a minimum in directed flow slope, dv1/dy|yâ¤0.8, as a function of beam energy. Proton dv1/dy changes sign near 10 GeV, and the directed flow for Î is consistent with the proton result. The directed flow slope for net protons shows a clear minimum at 14.5 GeV and becomes positive at beam energies below 10 GeV and above 30 GeV. New results for net-kaon directed flow slope resemble net protons from high energy down to 14.5 GeV, but remain negative at lower energies. The slope dv1/dy shows a strong centrality dependence, especially for p and Î at the lower beam energies. Available model calculations are in poor agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 956, December 2016, Pages 260-263
Journal: Nuclear Physics A - Volume 956, December 2016, Pages 260-263
نویسندگان
Prashanth Shanmuganathan, STAR Collaboration STAR Collaboration,