Nuclear Physics Consolidated Grant

核物理综合拨款

• 批准号: ST/P004458/1
• 负责人: David Ireland
• 金额: $ 210.82万
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FP004458%2F1
• 关键词: Nuclear; Physics; Consolidated; Grant

Approximately 98% of the mass of nucleons, and therefore of the visible universe, emerges from the interactions among their constituents, the quarks and gluons. The Higgs mechanism, which gives mass to the bare quarks, is responsible for only a small fraction of the nucleon mass. The confinement of quarks within mesons and baryons is a direct consequence of their fundamental interactions. The field theory of the strong nuclear force, Quantum Chromodynamics (QCD), is now well established, and yet the phenomena described above cannot be understood from the QCD Lagrangian; they are emergent properties that arise from the unique complexity of these interactions. QCD is as yet intractable at the mass scale of nucleons and nuclei, so a clear picture of the fundamental nature of matter at these energies does not yet exist. However, this situation is set to change, and both theoretical and experimental developments in the coming decade are expected to revolutionise our understanding of nuclear matter within the context of QCD and the Standard Model. We have an ambitious plan of work that encompasses the development of research programmes from existing themes, possibilities for new physics measurements that have opened up recently, and the completion of physics projects from data that has been previously obtained. Our programme will build on the work of our previous consolidated grant and we will exploit the investment in manpower and equipment to address the current issues in our field at the highest possible level, at the world's top facilities. The challenges for the science programme are encapsulated by several key questions, which we group together as they roughly match the themes we have defined:* What is the mechanism for confining quarks and gluons in strongly interacting particles (hadrons)?* What is the structure of the proton and neutron, and how do hadrons get their mass and spin? * Can we understand the excitation spectra of hadrons from the quark-quark interaction? * Do exotic hadrons (multiquark states, hybrid mesons and glueballs) exist? * How do nuclear forces arise from QCD? * What is the equation of state of nuclear matter? * What is the nature of dark matter?We will address these questions by leading experimental programmes at two of the world's leading facilities:* Jefferson Lab, Newport News, Virginia, USA (JLab)* MAMI, Mainz, Germany:

大约98％的核子质量以及可见宇宙的质量来自其成分，夸克和胶子之间的相互作用。 Higgs机制给裸夸克提供了质量，仅造成了一小部分核子质量。在介子和重子内部的夸克限制是它们基本互动的直接结果。强核力量的田间理论，即量子染色体动力学（QCD），现在已经建立了良好，但上述现象无法从QCD Lagrangian中理解。它们是这些相互作用的独特复杂性产生的新兴属性。 QCD在核子和核的质量尺度上尚未棘手，因此尚不存在这些能量在这些能量的基本性质的清晰图片。但是，这种情况将改变，并且在未来十年中的理论和实验发展都将在QCD和标准模型的背景下彻底改变我们对核问题的理解。我们制定了一个雄心勃勃的工作计划，包括从现有主题中开发研究计划的开发，最近开放的新物理测量的可能性以及从先前获得的数据中完成的物理项目。我们的计划将基于我们以前的合并赠款的工作，我们将利用人力和设备的投资，以在世界最高设施中以最高水平的最高水平解决当前问题。科学计划的挑战是由几个关键问题封装的，我们将它们大致匹配我们定义的主题：*在牢固相互作用的粒子（Hadrons）中限制夸克和胶子的机制是什么？* Proton和Neutron的结构是什么？ *我们可以理解夸克Quark互动中Hadron的激发光谱吗？ *异国情调的Hadron（多Quark States，Hybrid Mesons and Glueballs）是否存在？ *核力量是如何源自QCD的？ *核物质状态的方程式是什么？ *暗物质的本质是什么？我们将通过在世界两个领先的设施中领导实验计划来解决这些问题：*杰斐逊实验室，纽波特新闻，美国弗吉尼亚州（JLAB）* MAMI，MAMI，MAIMZ，德国：

项目成果

Measurement of beam asymmetry for π−Δ++ photoproduction on the proton at Eγ=8.5GeV

Eγ=8.5GeV 质子光生产中光束不对称性的测量

• DOI: 10.1103/physrevc.103.l022201
• 发表时间: 2021
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Adhikari, S.;Akondi, C. S.;Ali, A.;Amaryan, M.;Asaturyan, A.;Austregesilo, A.;Baldwin, Z.;Barbosa, F.;Barlow, J.;Barriga, E.
• 通讯作者: Barriga, E.

Measurement of the ? ? p 0 e + e - and ? ? e + e - ? Dalitz decays with the A2 setup at the Mainz Microtron

的测量？

• DOI: 10.1103/physrevc.95.035208
• 发表时间: 2017
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Adlarson P

Measurement of spin density matrix elements in Λ(1520) photoproduction at 8.2–8.8 GeV

8.2–8.8 GeV Î(1520) 光制作中自旋密度矩阵元素的测量

• DOI: 10.1103/physrevc.105.035201
• 发表时间: 2022
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Adhikari, S.;Akondi, C. S.;Albrecht, M.;Ali, A.;Amaryan, M.;Asaturyan, A.;Austregesilo, A.;Baldwin, Z.;Barbosa, F.;Barlow, J.
• 通讯作者: Barlow, J.

The GlueX beamline and detector

• DOI: 10.1016/j.nima.2020.164807
• 发表时间: 2020-05
• 期刊: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 作者: S. Adhikari;A. Ali;M. Amaryan;E. Anassontzis;A. Austregesilo;F. Barbosa;J. Barlow;A. Barnes;E. Barriga;R. Barsotti;T. Beattie;J. Benesch;V. Berdnikov;G. Biallas;T. Black;W. Boeglin;P. Brindza;W. Briscoe;T. Britton;J. Brock;W. Brooks;B. Cannon;C. Carlin;D. Carman;T. Carstens;N. Cao;O. Chernyshov;E. Chudakov;S. Cole;O. Cortes;W. Crahen;V. Crede;M. Dalton;T. Daniels;A. Deur;C. Dickover;S. Dobbs;A. Dolgolenko;R. Dotel;M. Dugger;R. Dzhygadlo;A. Dzierba;H. Egiyan;T. Erbora;A. Ernst;P. Eugenio;C. Fanelli;S. Fegan;A. Foda;J. Foote;J. Frye;S. Furletov;L. Gan;A. Gasparian;A. Gerasimov;N. Gevorgyan;C. Gleason;K. Goetzen;A. Goryachev;L. Guo;H. Hakobyan;A. Hamdi;J. Hardin;C. Henschel;G. Huber;C. Hutton;A. Hurley;P. Ioannou;D. Ireland;M. Ito;N. Jarvis;R. Jones;V. Kakoyan;S. Katsaganis;G. Kalicy;M. Kamel;C. Keith;F. Klein;R. Kliemt;D. Kolybaba;C. Kourkoumelis;S. Krueger;S. Kuleshov;I. Larin;D. Lawrence;J. Leckey;D. Lersch;B. Leverington;W. Levine;W. Li;B. Liu;K. Livingston;G. Lolos;V. Lyubovitskij;D. Mack;H. Marukyan;P. Mattione;V. Matveev;M. McCaughan;M. McCracken;W. Mcginley;J. McIntyre;D. Meekins;R. Mendez;C. Meyer;R. Miskimen;R. Mitchell;F. Mokaya;K. Moriya;F. Nerling;L. Ng;H. Ni;A. Ostrovidov;Z. Papandreou;M. Patsyuk;C. Paudel;P. Pauli;R. Pedroni;L. Pentchev;K. Peters;W. Phelps;J. Pierce;E. Pooser;V. Popov;B. Pratt;Y. Qiang;N. Qin;V. Razmyslovich;J. Reinhold;B. Ritchie;J. Ritman;L. Robison;D. Romanov;C. Romero;C. Salgado;N. Sandoval;T. Satogata;A. Schertz;S. Schadmand;A. Schick;R. Schumacher;C. Schwarz;J. Schwiening;A. Semenov;I. Semenova;K. Seth;X. Shen;M. Shepherd;E. Smith;D. Sober;A. Somov;S. Somov;O. Soto;N. Sparks;M. Staib;C. Stanislav;J. Stevens;J. Stewart;I. Strakovsky;B.C.L. Summner;K. Suresh;V. Tarasov;S. Taylor;L. A. Teigrob;A. Teymurazyan;A. Thiel;I. Tolstukhin;A. Tomaradze;A. Toro;A. Tsaris;Y. Haarlem;G. Vasileiadis;I. Vega;G. Visser;G. Voulgaris;N. Walford;D. Werthmüller;T. Whitlatch;N. Wickramaarachchi;M. Williams;E. Wolin;T. Xiao;Y. Yang;J. Zarling;Z. Zhang;Q. Zhou;X. Zhou;B. Zihlmann

Measurement of the p 0 ? e + e - ? Dalitz decay at the Mainz Microtron

p 0 的测量？

• DOI: 10.1103/physrevc.95.025202
• 发表时间: 2017
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Adlarson P