Academic Journal
A COMPARISON BETWEEN AN ULTRA-RELATIVISTIC AU+AU COLLISION AND THE PRIMORDIAL UNIVERSE
| العنوان: | A COMPARISON BETWEEN AN ULTRA-RELATIVISTIC AU+AU COLLISION AND THE PRIMORDIAL UNIVERSE |
|---|---|
| المؤلفون: | Jens Sören Lange, Star Experiment |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/hep-ph/0403104v1.pdf. |
| سنة النشر: | 2004 |
| المجموعة: | CiteSeerX |
| مصطلحات موضوعية: | a T |
| الوصف: | Ultra-relativistic nucleus-nucleus collisions create a state of matter of high temperature and small baryo-chemical potential, which is similar to the thermodynamical conditions in the primordial universe. Recent analyses of Au+Au collisions at RHIC revealed the temperature, size and density of the system. Thus, a comparison to the primordial universe can be attempted. In particular, two observables shall be investigated, namely (1) the temperature at baryon freeze-out (t≃10 fm/c in the Au+Au collision) and (2) the matter density at the partonic stage (t≤1 fm/c). At the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, New York, USA, gold nuclei collide at a maximum center-of-mass energy √ s=200 GeV. The STAR experiment is one of four experiments [1], which investigate novel QCD phenomena at high density and high temperature in these collisions. The main STAR subdetector is a midrapidity (|η|≤1.6) Time Projection Chamber [2] (TPC, R=2 m, L=4 m) with ≃48,000,000 pixels. In 3 years of data taking, high statistics (10 6 ≤N≤10 7 events on tape) for Au+Au, p+p and d+Au at √ s=200 GeV and Au+Au at √ s=130 GeV were recorded a. Fig. 1 shows a RHIC Au+Au collision. Figure 1. RHIC Au+Au collision at √ s=200 GeV, recorded at the |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.344.1782; http://arxiv.org/pdf/hep-ph/0403104v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.344.1782 http://arxiv.org/pdf/hep-ph/0403104v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.D53113C4 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |