...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review, C >Longitudinal fluctuations and decorrelations of anisotropic flows at energies available at the CERN Large Hadron Collider and at the BNL Relativistic Heavy Ion Collider
【24h】

Longitudinal fluctuations and decorrelations of anisotropic flows at energies available at the CERN Large Hadron Collider and at the BNL Relativistic Heavy Ion Collider

机译：在Cern大型强子撞机和BNL相对论重离子撞机的能量上有纵向波动和各向异性流动的去序列

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We perform a systematic study on the decorrelation of anisotropic flows along the pseudorapidity in relativistic heavy-ion collisions at the CERN Large Hadron Collider (LHC) and BNL Relativistic Heavy Ion Collider (RHIC) energies. The dynamical evolution of the quark-gluon plasma fireball is simulated via the CLVisc (ideal) (3 + 1)-dimensional hydrodynamics model, with the fully fluctuating initial condition from the A-Multi-Phase-Transport (AMPT) model. A detailed analysis is performed of the longitudinal decorrelations of elliptic, triangular, and quadrangular flows in terms of flow vectors, flow magnitudes, and flow orientations (event planes). It is found that pure flow magnitudes have a smaller longitudinal decorrelation than pure flow orientations, and the decorrelation of flow vectors is a combined effect of both flow magnitudes and orientations. The longitudinal decorrelation of elliptic flow has a strong and nonmonotonic centrality dependence due to the initial elliptic collision geometry: the smallest decorrelation in midcentral collisions. In contrast, the decorrelations of triangular and quadrangular flows have a weak centrality dependence, with slightly larger decorrelations in more peripheral collisions. Our numerical results for Pb Pb collisions at the LHC are in good agreement with the ATLAS data, while our RHIC results predict much larger longitudinal decorrelations compared to the LHC. We further analyze the longitudinal structures of the AMPT initial conditions and find that the final-state longitudinal decorrelation effects are strongly correlated with the lengths of the initial string structures in the AMPT model. The decorrelation effects are typically larger at lower collision energies and in more peripheral collisions due to the shorter lengths of the string structures in the initial states.
机译：我们对沿着Cern大型强子撞机（LHC）和BNL相对论的重离子撞机（RHIC）能量的相对论重离子碰撞中的初级异形流动沿伪型沿伪型沿伪型流动进行系统研究。通过CLVISC（理想）（3 + 1） - 二维流体动力学模型模拟Quark-Gluon等离子火球的动态演变，从A-Multi-阶段运输（AMPT）模型完全波动初始条件。在流动向量，流量幅度和流量方向（事件平面）方面对椭圆形，三角形和四边形流动的纵向去序进行详细分析。发现纯流量幅度具有比纯粹的流量取向更小的纵向去介质，并且流动矢量的去相关性是流量幅度和取向的组合效果。由于初始椭圆碰撞几何形状，椭圆流的纵向脱节具有强度和非单调的中心性依赖性：中间体碰撞中最小的去相关性。相反，三角形和四边形流的去相关性具有较弱的中心依赖性，具有略大的外围碰撞中的去相关性。我们在LHC的PB PB碰撞的数值结果与地图集数据吻合良好，而我们的RHIC结果与LHC相比预测更大的纵向去相关性。我们进一步分析了AMPT初始条件的纵向结构，并发现最终状态的纵向去相关性效果与AMPT模型中的初始字符串结构的长度强烈相关。由于初始状态中的字符串结构的长度较短，去介质效应通常在较低的碰撞能量下并且更加外围碰撞。

著录项

  • 来源
    《Physical review, C》 |2018年第2期|共15页
  • 作者

    Wu Xiang-Yu; Pang Long-Gang; Qin Guang-You; Wang Xin-Nian;

  • 作者单位

    Cent China Normal Univ MOE Key Lab Quark &

    Lepton Phys Wuhan 430079 Hubei Peoples R China;

    Lawrence Berkeley Natl Lab Nucl Sci Div Berkeley CA 94720 USA;

    Cent China Normal Univ MOE Key Lab Quark &

    Lepton Phys Wuhan 430079 Hubei Peoples R China;

    Cent China Normal Univ MOE Key Lab Quark &

    Lepton Phys Wuhan 430079 Hubei Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 原子核物理学、高能物理学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号