Quantitative Constraints on the Transport Properties of Hot Partonic Matter from Semi-Inclusive Single High Transverse Momentum Pion Suppression in Au+Au collisions at sqrt(s_NN) = 200 GeV
PHENIX Collaboration, A. Adare
备注：
422 authors, 13 pages text, RevTeX-4, 9 figures, 2 tables. This version is updated with changes made during the review process and is now the same as what was published in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at http://www.phenix.bnl.gov/papers.html
The PHENIX experiment has measured the suppression of semi-inclusive single high transverse momentum pi^0's in Au+Au collisions at sqrt(s_NN) = 200 GeV. The present understanding of this suppression is in terms of energy-loss of the parent (fragmenting) parton in a dense color-charge medium. We have performed a quantitative comparison between various parton energy-loss models and our experimental data. The statistical point-to-point uncorrelated as well as correlated systematic uncertainties are taken into account in the comparison. We detail this methodology and the resulting constraint on the model parameters, such as the initial color-charge density dN^g/dy, the medium transport coefficient <q^hat>, or the initial energy-loss parameter epsilon_0. We find that high transverse momentum pi^0 suppression in Au+Au collisions has sufficient precision to constrain these model dependent parameters at the +/1 20%-25% (one standard deviation) level. These constraints include only the experimental uncertainties, and further studies are needed to compute the corresponding theoretical uncertainties.
High transverse momentum inclusive neutral pion production in d+Au collisions at RHIC
给出了在赝快度范围0 < eta γ，sqrt（sNN）= 200 GeV的d+Au碰撞中高pT中性π介子产生的初步结果< 1. Photons from the decay pi0->，γ是在RHIC STAR实验的Barrel电磁量能器中探测到的。详细描述了分析过程，发现结果与早期的STAR研究结果和次领先阶微扰QCD计算吻合良好。
Inclusive jet spectra in 2.76 TeV collisions from ALICE
在RHIC上对重离子碰撞中高pT粒子产生的测量表明，介质引起的能量损失影响重离子碰撞早期产生的部分子。在LHC能量下，部分子初始产生截面的增加使得完全重构的喷流在很宽的运动学范围内可用，这允许对部分子能量损失进行更多的差分研究。部分子能量损失使我们能够获得在重离子碰撞中产生的热的非限定核物质的关键观测值。利用ALICE跟踪探测器和电磁量能器重建的喷流的包含截面是从2.76 TeV pp运行期间收集的数据中给出的。用于重建喷流和提取它们从铅铅碰撞的波动背景的程序进行了讨论。
Single/Double-Spin Asymmetry Measurements of Semi-Inclusive Pion Electroproduction on a Transversely Polarized 3He Target through Deep Inelastic Scattering
QED radiative effects in semi-inclusive deep-inelastic scattering: traditional and factorized approaches
Duke University（杜克大学）；Triangle Universities Nuclear Laboratory（三角大学核实验室）；Institute for Nuclear Problems of Belorussian State University（白俄罗斯国立大学核问题研究所）；Mississippi State University（密西西比州立大学）；Indiana University（印第安纳大学）；Shandong University（山东大学）；Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所）；Jefferson Lab（杰斐逊实验室）
