EPIC Results from ALICE
John W. Harris
综述了最近在大型强子对撞机上进行的ALICE实验的重离子结果。这些新的结果与相对论重离子对撞机实验的结果是一致的。
An overview is presented of the recent heavy ion results from the ALICE experiment at the Large Hadron Collider. These new results are placed in perspective with those from the Relativistic Heavy Ion Collider experiments.
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An overview of the recent results obtained by the ALICE Collaboration from the analysis of the pp, p-Pb and Pb-Pb data samples collected during LHC run I and the first half of run II is presented.
ALICE Overview
通过对2010年底LHC第一次重离子运行期间收集的$\PbPb$数据样本进行分析，对ALICE实验获得的结果进行了概述。
A selection of recent ALICE results from pp, p--Pb, Pb--Pb and Xe--Xe collisions taken during the Run 1 and Run 2 phases are summarized in this contribution, and the prospects for the upcoming Run 3 phase are outlined.
Overview of ALICE Results at Quark Matter 2014
ALICE合作在Quark Matter 2014上发布的结果涉及从pp碰撞中识别粒子喷流碎裂函数到p-Pb碰撞中集体签名的搜索，再到Pb-Pb碰撞中D介子喷流淬灭的精确测量。本文概述了ALICE合作在夸克物质2014上的贡献（31个平行演讲，2个flash演讲和80张海报）。
Overview of ALICE results
ALICE探测器的设计是为了研究高能量密度极端条件下的物质物理学。使用LHC成功运行I的数据的实验报告了不同的结果。目前工作的目标是提出一个概述最近的ALICE结果。这包括选择的结果，从几个分析的pp，p-pb和Pb-Pb数据在大型强子对撞机的能量。
We overview recent jet measurements in pp and Pb-Pb collisions with the ALICE detector. ALICE reconstructs jets at midrapidity using the anti-$k_{\mathrm{T}}$ algorithm, including both charged particle jets from the ALICE tracking detectors, and full jets from the combination of the ALICE electromagnetic calorimeter with the tracking system. We focus on inclusive and semi-inclusive jet measurements as well as jet substructure measurements, including a variety of groomed and ungroomed observables. In pp collisions, these results test pQCD techniques at $p_{\mathrm{T,\;jet}}<140$ GeV$/c$ in a lo…
One of the key methods used in the study of the Quark-Gluon Plasma (QGP) is femtoscopy, the technique of measuring short-range two-particle correlations as a function of relative momentum. Traditionally, femtoscopy has been utilized to measure the size of the QGP fireball created in relativistic heavy-ion collisions. However, since it is sensitive to the correlations between the particles in the final state, it has been shown recently that the parameters of the strong interaction can be probed as well. This review includes a broad range of ALICE femtoscopy results, including both traditional a…
ALICE is devoted to the study of the properties of the Quark-Gluon Plasma (QGP). This state of matter is created in ultra-relativistic heavy-ion collisions at the LHC. Heavy quarks are considered effective probes of the QGP since, due to their large masses, they are produced in hard scattering processes and experience the full evolution of the hot and dense medium while interacting with its constituents. The heavy-quark measurements provide insights on processes like in-medium energy loss and hadronization. Measurements in proton-proton collisions provide the baseline for interpreting heavy-io…
Recent results from the ALICE experiment are presented with a particular emphasis on particle identification, the nuclear modification factor ($R_{AA}$) and azimuthal anisotropy ($v_2$). Comparison of lead-lead and proton-lead results reveals evidence of collectivity in small systems.
Overview of ALICE results
本文介绍了在sqrt（s_NN）= 2.76TeV的Pb-Pb碰撞中的整体事件性质、粒子谱、方位角各向异性、重味和夸克偶素产生的ALICE结果。本文简要回顾了sqrt（sNN）= 5.02TeV的p-Pb碰撞的初步结果。
Heavy-flavour hadrons, i.e. hadrons containing charm or beauty quarks, are effective probes to test perturbative-QCD (pQCD) calculations, to investigate the different hadronisation mechanisms, and to study the quark-gluon plasma (QGP) produced in relativistic heavy-ion collisions at the LHC. Measurements performed in pp and p-Pb collisions have recently revealed unexpected features not in line with the expectations based on previous measurements from $\rm{e^+e^-}$ and ep collisions, showing that charm fragmentation fractions are not universal. The investigation of initial-state effects such as…
The heavy-ion programme of the ALICE experiment at LHC
LHC的ALICE实验主要致力于重离子物理学。本文将对它的性能、与它的第一次测量有关的一些预言以及QGP的可观测测量作一概述。
ALICE is a general purpose experiment designed to investigate nucleus-nucleus collisions at the Large Hadron Collider (LHC), located at CERN. The ALICE detector is optimized for the reconstruction of quarkonia through the dimuon decay channel at foward rapidity as well as the dielectron decay channel at midrapidity. In this contribution, quarkonium measurements performed by the ALICE collaboration at both midrapidity and forward rapidity for various energies and colliding systems (pp, p-Pb and Pb-Pb), will be discussed and compared to theory.
Overview of ALICE results on azimuthal correlations using neutral- and heavy-meson triggers
ALICE探测器致力于研究在重离子碰撞中产生的热而致密的物质的性质。在用来研究这些性质的探测器中，有高动量粒子，它们起源于火球形成前发生的硬散射。硬散射的碎片与热而致密的物质相互作用，通过这种相互作用，它们的光谱和方位角分布被修改。这是探测的核修饰因子的测量，其中的$p_{\mathrm{T}}$在铅铅碰撞中获得的光谱进行比较，以PP基线。在$p_{\mathrm{T}} > 4$ GeV/ $c$处观察到强的带电强子以及中性和重味介子的抑制。方位角关联，使用高动量（$p_{\mathrm{T}} > 4$ GeV/ $c$）强子作为触发器，可以提供进一步的洞察介质的存在如何修改粒子的最终运动学分布。与理论模型的比较可以用来检验它们对介质性质的预测。本文综述了在$\sqrt{s}=7$ TeV pp碰撞和$\sqrt{s_{\rm{NN}}}=2.76$ TeV Pb-Pb碰撞中中性和重味介子与带电强子的ALICE方位角关联测量。我们还提出了一个测量的$π^{0}$与喷注在PP碰撞在$\sqrt{s}=7$ TeV。
The ALICE experiment explores the properties of strongly interacting QCD matter at extremely high temperatures created in Pb-Pb collisions at LHC and provides further insight into small-system physics in (high-multiplicity) pp and p-Pb collisions. The ALICE collaboration presented 27 parallel talks, 50 posters, and 1 flash talk at Quark Matter 2015 and covered various topics including collective dynamics, correlations and fluctuations, heavy flavors, quarkonia, jets and high $p_{\rm T}$ hadrons, electromagnetic probes, small system physics, and the upgrade program. This paper highlights some o…
Azimuthal correlations are a powerful tool to probe the properties and the evolution of the collision system. In this proceedings, we will review the recent azimuthal correlation measurements from ALICE at the LHC. The comparison to other experimental measurements and various theoretical calculations will be discussed as well.
Overview of the latest ALICE UPC and photonuclear results
本文综述 ALICE 利用 LHC Run 2 数据在超周边碰撞中取得的四 π、$K^+K^-$ 光生及 Pb–Pb 矢量介子干涉测量结果，并展望 Run 3。
The ALICE detector is well suited to measure heavy-flavour (charm and beauty) production via hadronic and semi-leptonic decay channels of heavy-flavour particles. Here an overview of heavy-flavour measurements made with the ALICE detector during Run 1 in pp and p--Pb collisions is presented and discussed.
Soft QCD, minimum bias and diffraction: results from ALICE
我们报告最近的结果从ALICE实验在LHC的最小偏差pp碰撞。这个概述包括非弹性截面的结果，分析单和双衍射事件;强子产生机制的研究，包括包容性和确定的粒子;玻色-爱因斯坦相关性;和$<p_T>$的波动
ALICE Physics Summary
大型强子对撞机的ALICE实验收集了$\sqrt{s}$ = 0.9、2.76、7和8 TeV的质子-质子（pp）碰撞、$\sqrt{s_{\rm NN}}$ = 2.76 TeV的铅-铅（Pb-Pb）碰撞和$\sqrt{s_{\rm NN}}$ = 5.02 TeV的质子-铅（p-Pb）碰撞的数据。本文介绍了ALICE最近获得的一些具有代表性的测量结果。
ALICE results from the first Pb-Pb run at the CERN LHC
经过20年的准备，专门的重离子实验ALICE于2009年底在欧洲核子研究中心的大型强子对撞机加速器上获得了第一批数据，并于2010年底使用铅束进行了质子碰撞。本文将简要概述夸克物质2011会议上提出的主要结果。
An overview of recent ALICE results aimed to understand collective phenomena in Pb-Pb collisions at the LHC is presented. These include the centrality dependence of the transverse momentum ($p_{\rm T}$) distributions of charged pions, kaons, and protons as well as results on anisotropic flow using data from Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV. In addition, comparisons between data and model predictions are presented.
The ALICE experiment at the Large Hadron Collider (LHC) at CERN is optimized for recording events in the very large particle multiplicity environment of heavy-ion collisions at LHC energies. The ALICE collaboration has taken data in Pb-Pb collisions in Run I and Run II at nucleon-nucleon center-of-mass energies $\sqrt{s_{\text{NN}}}$ = 2.76 and \mbox{5.02 TeV}, respectively, and in pp collisions at center-of-mass energies $\sqrt{s}$ = 0.9, 2.76, 5.02, 7, 8 and 13 TeV. The asymmetric system p-Pb was measured at a center-of-mass energy $\sqrt{s_{\text{NN}}}$ = 5.02 TeV. Selected physics results …
In this paper, an overview of recent $\mathrm D^{0}$, $\mathrm D^{+}$ and $\mathrm D^{*+}$ measurements, performed by ALICE in proton--proton collisions at $\sqrt{s}~=~2.76$, 5, 7, 8 and 13 TeV, is reported. The minimum-bias production cross sections, as well as their energy and species dependences, are compared to perturbative QCD calculations. The evolution of the D-meson yields with the event multiplicity is compared to phenomenological models.
Calorimetry for the ePIC Experiment
本文概述了ePIC实验为满足EIC高亮度对撞中精确测量散射电子和强子末态的需求，在几乎全极角范围采用的电磁与强子量热器设计。
An overview of recent ${\rm D^+}$, ${\rm D^0}$, ${\rm D^{*+}}$ and ${\rm D_s^+}$ measurements performed by ALICE at central rapidity in proton-proton collisions at $\sqrt{s}=7$ and 8 TeV, as well as lead-lead collisions at $\sqrt{s_\mathrm{NN}}=2.76$ TeV, is presented. An emphasis is put on the discussion of theoretical predictions with respect to the LHC Run I data.
Overview on Efforts for a Second Detector at the Electron-Ion Collider (EIC)
EIC计划部署第二个探测器以增强科学能力，提供交叉验证和互补技术，提升低p_T测量和专属物理研究。
Charmonium production at mid-rapidity in Pb-Pb and p-Pb collisions with ALICE
本文综述了ALICE测量在质量中心能量为$\sqrt{s_\mathrm{NN}} = 2.76\,\mathrm{TeV}$的Pb-Pb碰撞和在中快度（$|y_\mathrm{lab} | < 0.8$）下到零的$\sqrt{s_\mathrm{NN}}= 5.02\,\mathrm{TeV}$的p-Pb碰撞中$\mathrm{J/}ψ$的产生。冷核物质的影响，估计从p-Pb测量和Pb-Pb结果的解释的影响进行了讨论，根据比较的数据模型计算。
The ALICE detector at LHC
介绍了在大型强子对撞机LHC上进行的ALICE实验，并对其物理计划进行了概述。为了说明ALICE的物理潜力，讨论了一些具体的可观测量。
In this work we present a summary of the most relevant results on heavy-ion and astroparticle physics in ALICE. The summary includes a brief overview of the current status on the characterization of the hot and dense QCD medium created in the heavy-ion collisions produced at the LHC, as well as the intriguing finding of collective-like phenomena in small collision systems.
Prospects for heavy flavour measurements with the ALICE inner tracker upgrade
ALICE是CERN LHC的通用重离子探测器。它的目标是研究强相互作用物质在Pb{Pb碰撞中达到的极端密度和温度条件下的性质，目的是表征夸克-胶子等离子体（QGP）。在这种情况下，升级的ALICE内部跟踪目标的物理主题，ALICE可以带来独特的贡献，通过重型avour探针的QGP表征。我们提出了一个概述的内部跟踪器升级和预期的物理性能，重型avour测量。
Photon Physics in ALICE
本文介绍了LHC质子-质子和重离子碰撞中的ALICE实验所要研究的光子物理。我们比较了ALICE光子探测器的性能，并估计它们测量中性介子和直接光子谱以及pp和Pb+Pb碰撞中的γ-强子和γ-喷流相关性的能力。
Recent results from ALICE
大型强子对撞机的ALICE实验收集了丰富的质子-质子和铅-铅碰撞数据。本文综述了最近的ALICE结果。本文讨论了在$\sqrt{s}=0.9$、2.76和7 TeV的pp碰撞中测得的强子谱。通过ALICE实验测量的许多观测值揭示了在$\sqrt{s_{NN}}=2.76$ TeV的Pb-Pb碰撞中产生的核物质的性质。
ALICE is an experiment mainly dedicated to the study of the quark-gluon plasma (QGP), a state of nuclear matter where quarks and gluons are deconfined, due to high temperature and density. The production of quarkonia, bound states of either a charm and anti-charm quark pair for charmonia or a bottom and anti-bottom quark pair for bottomonia, is a very useful probe of this state of matter. Indeed, the presence of the QGP modifies their production yields, due to a competition between medium-induced suppression and, at least for charmonia, a recombination mechanism in medium or at hadronization. …
In ALICE, open heavy-flavour production is studied through the measurements of the leptons (electrons and muons) from heavy-flavour hadron decays at central and forward rapidity and via the reconstruction of D-meson hadronic decays at mid-rapidity. An overview of the open heavy-flavour production with ALICE in pp ($\sqrt{s}$ = 2.76 TeV and 7 TeV), p--Pb ($\sqrt {s_{\rm NN}}$ = 5.02 TeV) and Pb--Pb ($\sqrt {s_{\rm NN}}$ = 2.76 TeV) collisions will be presented. We will discuss the production cross sections, modifications of the transverse momentum distributions, azimuthal anisotropic emissions …
Physics with the ALICE experiment
ALICE实验在LHC收集数据pp碰撞在$\sqrt{s}$ =0.9，2.76和7 TeV和PbPb碰撞在2.76 TeV。本文介绍了探测器性能的亮点和ALICE在pp和AA碰撞中测量的实验结果的概述。质子-质子碰撞物理学的重点是在低和中等$p_T$的强子光谱学。测量与铅铅碰撞显示在比较与pp碰撞，热夸克物质的性质进行了讨论。
Recent results on heavy flavours and quarkonia from ALICE
本文概述了ALICE实验在质子-质子和p-Pb等碰撞系统中重味强子和夸克偶素的最新测量结果，揭示了重夸克碎裂分数的非普适性，并与相关理论计算进行了对比。
Open heavy-flavour measurements in pp and Pb-Pb collisions with ALICE at the LHC
我们提出了一个概述的测量开放的重味生产与ALICE实验在LHC。研究使用单轻子（中快度的电子和前快度的μ子）和D介子进行，它们通过强子衰变通道重建。在$\sqrt{s}$ = 2.76和7 TeV的质子-质子碰撞中测量的微分产生截面与微扰QCD计算结果一致。从铅铅碰撞在$\sqrt{s_{NN}}$ = 2.76 TeV的核修改因子$R_{AA}$的结果显示，随着椭圆流$ν_2$。
Open Charm Mesons at the LHC with ALICE
ALICE实验将能够在欧洲核子研究中心大型强子对撞机（LHC）的新能区中探测质子-质子和重离子碰撞中含有魅夸克和美夸克的强子。开粲介子是研究重离子碰撞中产生的介质的有力工具，因为粲夸克是在非常短的时间尺度上产生的，并且它们经历了整个碰撞历史。此外，重味产量的测量提供了一个自然的标准化的charmonia和bottomonia生产在LHC。在这次演讲中，在对ALICE的重味物理观点进行了概述之后，我们将报告一些利用蒙特卡罗模拟数据通过强子衰变通道重建D介子的研究。
Proceedings of Direct photon measurement in small systems and thermal radiation from QGP with ALICE, Hard Probes conference 2024
本文介绍了ALICE实验通过测量pp和Pb-Pb碰撞中双电子与直接光子产生，研究QGP热辐射及小系统中QGP存在的可能性，并展望Run 3未来测量。
Results on flow from the ALICE Collaboration
这个简短的概述包括最近的结果从ALICE合作的各向异性流的带电和识别粒子在sqrt（sNN）= 2.76 TeV铅铅碰撞。我们还讨论了依赖于电荷和事件平面的方位角相关性，这对于手征磁效应的测试以及理解系统演化和强子化过程的动力学是很重要的。最后，我们提出了ALICE的结果获得了一种新的技术，事件形状工程，它允许进行物理分析的事件非常大或小的流量。
The STAR experiment has been delivering significant physics results for more than 20 years. Stable operation of the experiment was achieved by using a robust controls system based on the Experimental Physics and Industrial Control System (EPICS). Now an object-oriented approach with Python libraries, adapted for EPICS software, is going to replace the procedural-based EPICS C libraries previously used at STAR. Advantages of the new approach include stability of operation, code reduction and straightforward project documentation. The first two sections of this paper introduce the STAR experimen…
Physics at the LHC: a short overview
欧洲核子研究中心的大型强子对撞机（LHC）几个月前开始运行。这台机器将提供质子-质子和核-核碰撞，能量高达sqrt（s）=14 TeV，亮度高达L~10^{34} cm^{-2}s^{-1}，这是以前从未达到的。简要回顾了7个大型强子对撞机实验-- ATLAS、CMS、ALICE、LHCb、TOTEM、LHCf和MOEDAL --在未来几年内要解决的主要开放性科学问题。
Properties of the QCD Matter: A Review of Selected Results from the ALICE Experiment
本文综述了ALICE实验在LHC上关于QGP性质、粒子产生、流与关联、双轻子、夸克偶素、电磁探针、重味及喷注的近期重要结果，并介绍了探测器升级计划。
Open heavy flavour reconstruction in the ALICE central barrel
ALICE实验将能够在欧洲核子研究中心大型强子对撞机（LHC）的新能区中探测质子-质子和重离子碰撞中的开魅和美人强子。重口味是一个强大的工具，以调查在高能量核-核相互作用中产生的介质，因为它们是在早期发生的硬散射中产生的，并且由于它们在碰撞时间尺度上的长寿命，它们探测系统演化的所有阶段。ALICE中心桶（$-0.9 < η< 0.9$）的探测器将允许跟踪带电粒子到低横向动量（$\approx$ 100 MeV/$c$），并将提供强子和电子识别以及初级和次级顶点位置的准确测量。因此，利用半电子和强子衰变通道，将有可能测量在中心快度区到低横向动量的开放重味的产生。在这里，我们提出了一个总体概述的ALICE观点重味物理和一些例子，从开放的魅力和美丽的分析，已开发和测试的详细模拟的实验装置。
In heavy-ion physics, measurements of short-lived hadronic resonances allow the properties of the hadronic phase of the collision to be studied. In addition, resonances can be used along with stable hadrons to study parton energy loss in the quark-gluon plasma and the mechanisms that shape hadron pT spectra at intermediate transverse momenta. Resonance measurements in small systems serve as a reference for heavy-ion collisions and contribute to searches for collective effects. An overview of recent results on hadronic resonance production measured in ALICE is presented. These results include t…
Probing hot and dense matter production in heavy ion collisions via neutral mesons and photons with the ALICE detector at the LHC
夸克-胶子等离子体（QGP）的关键特征之一是与质子-质子（pp）碰撞相比，重离子碰撞中强子和直接光子谱的改变。重离子碰撞中高横动量强子产生的抑制可以用硬散射过程中产生的部分子的能量损失来解释。所观察到的抑制的依赖性的横向动量（PT）的测量强子向更高的PT是一个重要的输入，在QGP的喷流淬灭效应的理论理解和能量损失的性质。帮助建立能量损失图的另一个关键观察结果是高pT直接光子产生，预计不会受到抑制。对于低pT光子产生，预期热源将导致直接光子的增强。本文综述了在大型强子对撞机（LHC）上进行的ALICE实验对重离子和pp碰撞中光子和中性介子产生的测量。
Heavy quarks (charm and beauty) are produced early in the nucleus-nucleus collisions, and heavy flavor survives throughout the later stages. Measurements of heavy-flavor quarks thus provide us with means to understand the properties of the Quark-Gluon Plasma, a hot and dense state of matter created in heavy-ion collisions. Production of heavy-flavor in small collision systems, on the other hand, can be used to test Quantum-chromodynamics models. After a successful completion of the Run-I data taking period, the increased luminosity from the LHC and an upgraded ALICE detector system in the Run-…
A major upgrade of the ALICE experiment is in progress and will result in high-rate data taking during LHC Run 3 (2022-2024). The LHC interaction rate at Point 2 where the ALICE experiment is located will be increased to $50\ \mathrm{kHz}$ in Pb--Pb collisions and $1\ \mathrm{MHz}$ in pp collisions. The ALICE experiment will be able to read out data at these interaction rates leading to an increase of the collected luminosity by a factor of up to about 100 with respect to LHC Runs 1 and 2. To satisfy these requirements, a new readout system has been developed for most of the ALICE detectors, a…
The exploration of properties of an extreme state of matter, the Quark--Gluon Plasma, has broken new ground with the recent Run 2 operation of the Large Hadron Collider with heavy-ion collisions at the highest energy to date. With the heavy-ion data taken at the end of 2015, the ALICE Collaboration has made the first observation of anisotropic flow of charged particles and related phenomena in lead--lead collisions at the record breaking energy of 5.02 TeV per nucleon pair. The Run 2 results come after the proton-lead collisions, which provided a lot of unexpected results obtained with two- an…
The PHENIX and STAR Collaborations at the Relativistic Heavy-Ion Collider and ALICE, CMS, ATLAS and LHCb Collaborations at the Large Hadron Collider have measured the production of charmonium and bottonium states as well as open heavy flavor hadrons via their hadronic and semi-leptonic decays at mid-rapidity and in the semi-muonic decay channel at forward rapidity in pp, p--A and A--A collisions in an energy domain that ranges from $\sqrt{s}$ = 0.2 TeV to $\sqrt{s}$ = 13 TeV in pp collisions and from $\sqrt{s_{\rm NN}}$ = 0.2 TeV to $\sqrt{s_{\rm NN}}$ = 5.02 TeV in A--A collisions. In this co…
Measurements of the production of short-lived hadronic resonances are used to probe the properties of the late hadronic phase in ultra-relativistic heavy-ion collisions. Since these resonances have lifetimes comparable to that of the fireball, they are sensitive to the competing effects of particle re-scattering and regeneration in the hadronic gas, which modify the observed particle momentum distributions and yields after hadronisation. Having different masses, quantum numbers and quark content, hadronic resonances carry a wealth of information on different aspects of ion-ion collisions, incl…
Soft Probes of the Quark-Gluon Plasma with ALICE at LHC
大型强子对撞机（LHC）将于2009年夏末开始数据采集活动，并将提供碰撞能量分别高达14 TeV和5.5 ATEV的p-p和Pb-Pb束流。Pb-Pb重离子加速器计划的目标是创造出部分子的非受限态--夸克-胶子等离子体（QGP），这一新一代加速器的出现为QGP的研究提供了可能性，使其成为最令人兴奋的物理学课题之一。特别是，“软”的可观测量有关的低和中间的pT过程，将揭示系统的许多基本属性，如热力学参数，化学成分，膨胀速度等的p-p碰撞将是非常感兴趣的，以及，因为它们将作为重离子的重要参考。大型离子对撞机实验（英语：Large Ion Collider Experiment，ALICE）是一个致力于研究QGP的大型强子对撞机实验。它的大接受度和低磁场使其特别适合于软现象的研究。在给出了这个探测器的概述之后，我将介绍p-p和Pb-Pb碰撞中软物理的主要动机和前景。
Heavy-ion collision basics
本文介绍了相对论性重离子碰撞物理的基本概念与术语，并引用ALICE综述论文的实验结果进行说明。
Overview of recent UPC measurements
本文综述了ALICE实验在LHC上对UPC中光子诱导过程的最新测量，包括向量介子产额、极化测量和粒子产额机制研究。
Recent results and upgrade of the ALICE muon spectrometer
本研究介绍CERN LHC上ALICE实验μ子谱仪的升级：新增MFT探测器提升前向快度区物理性能，结合Run 3更高的对撞速率与数据量，展示升级后的预期性能与初步结果，助力QGP性质研究。
Experimental overview of electromagnetic radiation in heavy-ion collisions
本文综述 RHIC、LHC 及低能重离子碰撞中直接光子与双轻子实验结果，聚焦直接光子之谜、普适标度及未来测量前景。
The first collisions of lead nuclei, delivered by the CERN Large Hadron Collider (LHC) at the end of 2010, at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}$ = 2.76 TeV, marked the beginning of a new era in ultra-relativistic heavy-ion physics. The study of the properties of the produced hot and dense strongly-interacting matter at these unprecedented energies is currently experimentally pursued by all four big LHC experiments, ALICE, ATLAS, CMS, and LHCb. The more than a factor 10 increase of collision energy at LHC, relative to the previously achieved maximal energy at other collide…
The first collisions of lead nuclei, delivered by the CERN Large Hadron Collider (LHC) at the end of 2010, at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}$ = 2.76 TeV, marked the beginning of a new era in ultra-relativistic heavy-ion physics. Following the Run 1 period, LHC also successfully delivered PbPb collisions at the collision energy $\sqrt{s_{NN}}$ = 5.02 TeV at the end of 2015. The study of the properties of the produced hot and dense strongly-interacting matter at these unprecedented energies is experimentally pursued by all four big LHC experiments, ALICE, ATLAS, CMS, and…
Status and overview of development of the Silicon Pixel Detector for the PHENIX experiment at the BNL RHIC
我们已经开发了一个硅像素探测器，以提高PHENIX实验的物理能力。该探测器由两层传感器组成，将安装在碰撞点的束管周围，并覆盖| η| < 1.2，方位角为| ϕ| ~ 2π。探测器使用200微米厚的硅传感器和读出芯片开发的ALICE实验。为了满足PHENIX DAQ的读出要求，需要并行读出4个读出芯片。PHENIX的物理目标要求探测器的辐射厚度最小化。为了满足这些标准，已经设计和开发了检测器。本文介绍了目前的发展状况，特别是低质量读出总线和前端读出电子学的发展。
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