Studies of Quark-Gluon Physics

夸克-胶子物理研究

• 批准号: 2013002
• 负责人: Edward Kinney
• 金额: $ 42万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2013002&HistoricalAwards=false
• 关键词: Studies; Quark; Gluon; Physics

The research program supported by this NSF award will focus on the study of the inner structure of the proton and neutron, or more generically, the nucleon. These basic particles are the building blocks for all the visible matter around us, making up the atomic nucleus. While it is well known that the proton and neutron are composed of very light quarks held in a bound state by the very strong color force, there is still little information available about the detailed structure of this bound state. In particular, we know very little of the distribution of the quark momentum in the three space dimensions we live in. Our present knowledge is essentially limited to one dimension, similar to a shadow profile picture of a person. This group will lead two experiments at Jefferson Laboratory in which beams of high energy electrons or photons are scattered from hydrogen and deuterium targets. In one experiment photons will interact with the quarks inside the nucleus and produce a map of where the quarks are relative to each other and their momentum. The other experiment will map out the scattering over a wide range of angles and energies that produce silhouette-like images of the nucleon. Beyond the scientific goals, the proposed experiment setup, data acquisition and analysis activities will continue to offer education and research experience to undergraduates, graduate students, and postdoctoral research associates. Working in the environment of an international collaboration based at a premier accelerator facility will broaden the perspective and interests of the group members and help to train the future STEM workforce of the country.This three-year research program will study the 3D momentum distribution of the quarks by examining the momentum of the sub-atomic particles they produce when ejected from the nucleon by a high-energy a photon, produced by the high intensity accelerator at the Thomas Jefferson National Accelerator Facility. For the first time, the nuclear physics community will study this quark ejection process using photons with distinct polarization, allowing for the study of effects related to the quark spin of ½. Single spin asymmetry measurements from semi-inclusive deep-inelastic-scattering (SIDIS) will be used to study the transverse momentum dependent parton distribution (TMD) and fragmentation functions of the nucleon. SIDIS measurements are becoming a flagship program both at the 12-GeV CEBAF at Jefferson Lab, and also the newly announced electron-ion-collider to be built at Brook Haven National Lab in the coming decade. The research activities will center around JLab experiments using SIDIS to measure the cross section of charged pions and kaons from hydrogen and deuterium targets. This work is partially motivated as a test of the factorization framework used for SIDIS processes where the TMD extraction from such measurements is based upon. Another experiment focuses on performing L-T separations of SIDIS charged pion production from hydrogen and deuterium targets to test whether R from SIDIS is the same as R from inclusive DIS, where R is the longitudinal to transverse cross section. The projected measurements will significantly improve the existing scarce data from prior experiments and advance our knowledge about the underlying production mechanism.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

由质子和中子研究的研究支持的研究计划，核子是我们周围所有可见物质的基本序列。通过非常颜色的力量，尤其是该界面的列表，我们的列表尤其是我们目前的三个空间维度的分布。为了dime dim dime to onen sion，类似于一个人的阴影剖面图。内部。继续为本科生提供体验经验，并在基于国际合作的环境中，在总理加速度的国际合作环境中工作将扩大小组成员的统治态度在Thomas Jefferson National Accelerator设施的高强度加速器的动量中，Qualks的离子首次将核物理群体抑制了具有独特的偏光量。包容性深弹性分散（SIDI）将用于研究杰斐逊实验室的E 12-GEV CEBAF的横向动量依赖分布（TMD）和片段化功能。在未来十年测量是基于。脚趾脚趾的脚趾脚趾脚趾的脚趾脚趾的脚趾生产机制。该奖项反映了NSF的理想小姐，值得支持主题为主题的Nteltectual功绩和更广泛的影响标准。

项目成果

Constraints on the onset of color transparency from quasielastic C12(e,e′p) up to Q2=14.2(GeV/c)2

从准弹性 C12(e,e−p) 到 Q2=14.2(GeV/c)2 颜色透明度开始的限制

• DOI: 10.1103/physrevc.108.025203
• 发表时间: 2023
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Bhetuwal, D.;Matter, J.;Szumila-Vance, H.;Gayoso, C. Ayerbe;Kabir, M. L.;Dutta, D.;Ent, R.;Abrams, D.;Ahmed, Z.;Aljawrneh, B.
• 通讯作者: Aljawrneh, B.

Publisher Correction: The asymmetry of antimatter in the proton

出版商更正：质子中反物质的不对称性

• DOI: 10.1038/s41586-022-04707-z
• 发表时间: 2022
• 期刊: Nature
• 影响因子: 64.8
• 作者: Dove, J.;Kerns, B.;McClellan, R. E.;Miyasaka, S.;Morton, D. H.;Nagai, K.;Prasad, S.;Sanftl, F.;Scott, M. B.;Tadepalli, A. S.
• 通讯作者: Tadepalli, A. S.

Probing the Deuteron at Very Large Internal Momenta

探测氘核的巨大内动量

• DOI: 10.1103/physrevlett.125.262501
• 发表时间: 2020
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Yero, C.;Abrams, D.;Ahmed, Z.;Ahmidouch, A.;Aljawrneh, B.;Alsalmi, S.;Ambrose, R.;Armstrong, W.;Asaturyan, A.;Assumin-Gyimah, K.
• 通讯作者: Assumin-Gyimah, K.

An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab

• DOI: 10.1140/epja/s10050-021-00564-y
• 发表时间: 2020-07
• 期刊: The European Physical Journal A
• 作者: A. Accardi;A. Afanasev;I. Albayrak;S. Ali;M. Amaryan;J. Annand;J. Arrington;A. Asaturyan;H. Atac;H. Avakian;T. Averett;C. Gayoso;X. Bai;L. Barion;M. Battaglieri;V. Bellini;R. Beminiwattha;F. Benmokhtar;V. Berdnikov;J. Bernauer;V. Bertone;A. Bianconi;A. Biselli;P. Bisio;P. Blunden;M. Boer;M. Bondí;K. Brinkmann;W. Briscoe;V. Burkert;T. Cao;A. Camsonne;R. Capobianco;L. Cardman;M. Carmignotto;M. Caudron;L. Causse;A. Celentano;P. Chatagnon;J. Chen;T. Chetry;G. Ciullo;E. Cline;P. Cole;M. Contalbrigo;G. Costantini;A. D’Angelo;L. Darm'e;D. Day;M. Defurne;M. Napoli;A. Deur;R. Vita;N. d'Hose;S. Diehl;M. Diefenthaler;B. Dongwi;R. Dupr'e;H. Dutrieux;D. Dutta;M. Ehrhart;Lamiaa El Fassi;L. Elouadrhiri;R. Ent;J. Erler;I. Fernando;A. Filippi;D. Flay;T. Forest;E. Fuchey;S. Fucini;Y. Furletova;H. Gao;D. Gaskell;A. Gasparian;T. Gautam;F. Girod;K. Gnanvo;J. Grames;G. N. Grauvoge;P. Guèye;M. Guidal;S. Habet;T. Hague;David Hamilton;O. Hansen;D. Hasell;M. Hattawy;D. Higinbotham;A. Hobart;T. Horn;C. Hyde;H. Ibrahim;A. Ilyichev;A. Italiano;K. Joo;S. Joosten;V. Khachatryan;N. Kalantarians;G. Kalicy;B. Karky;D. Keller;C. Keppel;M. Kerver;M. Khandaker;A. Kim;J. Kim;P. King;E. Kinney;V. Klimenko;H. Ko;M. Kohl;V. Kozhuharov;B. Kriesten;G. Krnjaic;V. Kubarovsky;T. Kutz;L. Lanza;M. Leali;P. Lenisa;N. Liyanage;Q. Liu;S. Liuti;J. Mammei;S. Mantry;D. Marchand;P. Markowitz;L. Marsicano;V. Mascagna;Malek Mazouz;M. McCaughan;B. Mckinnon;D. Mcnulty;W. Melnitchouk;A. Metz;Z. Meziani;S. Migliorati;M. Mihovilovič;R. Milner;A. Mkrtchyan;H. Mkrtchyan;A. Movsisyan;H. Moutarde;M. Muhoza;C. Camacho;J. Murphy;P. Nadel-Turonski;E. Nardi;J. Nazeer;S. Niccolai;G. Niculescu;R. Novotný;J. Owens;M. Paolone;L. Pappalardo;R. Paremuzyan;B. Pasquini;E. Pasyuk;T. Patel;I. Pegg;C. Peng;D. Perera;M. Poelker;K. Price;A. Puckett;M. Raggi;N. Randazzo;M. Rashad;M. Rathnayake;B. Raue;P. Reimer;M. Rinaldi;Alessandro Rizzo;Y. Roblin;J. Roche;O. Rondon-Aramayo;F. Sabati'e;G. Salmè;E. Santopinto;R. Estrada;B. Sawatzky;A. Schmidt;P. Schweitzer;S. Scopetta;V. Sergeyeva;M. Shabestari;A. Shahinyan;Y. Sharabian;S. vSirca;E. Smith;D. Sokhan;A. Somov;N. Sparveris;M. Spata;H. Spiesberger;M. Spreafico;S. Stepanyan;P. Stoler;I. Strakovsky;R. Suleiman;M. Suresh;P. Sznajder;H. Szumila-Vance;V. Tadevosyan;A. Tadepalli;A. Thomas;M. Tiefenback;R. Trotta;M. Ungaro;P. Valente;M. Vanderhaeghen;L. Venturelli;H. Voskanyan;E. Voutier;B. Wojtsekhowski;M. Wood;S. Wood;J. Xie;W. Xiong;Z. Ye;M. Yurov;H. Zaunick;S. Zhamkochyan;J. Zhang;S. Zhang;S. Zhao;Z. Zhao;X. Zheng;J. Zhou;C. Zorn

Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab

• DOI: 10.1140/epja/s10050-021-00581-x
• 发表时间: 2021-05
• 期刊: The European Physical Journal A
• 作者: A. Afanasev;I. Albayrak;S. Ali;M. Amaryan;J. Annand;A. Asaturyan;V. Bellini;V. Berdnikov;M. Boer;K. Brinkmann;W. Briscoe;A. Camsonne;M. Caudron;L. Causse;M. Carmignotto;D. Day;M. Defurne;S. Diehln;R. Ent;P. Chatagnon;R. Dupr'e;D. Dutta;M. Ehrhart;M. A. I. Fernando;T. Forest;M. Guidal;J. Grames;P. Guèye;S. Habet;David Hamilton;A. Hobart;T. Horn;C. Hyde;G. Kalicy;D. Keller;C. Keppel;M. Kerver;E. Kinney;H. Ko;D. Marchand;P. Markowitze;Malek Mazouz;M. McCaughan;B. Mckinnon;A. Mkrtchyan;H. Mkrtchyan;M. Muhoza;C. Camacho;J. Murphy;P. Nadel-Turonski;S. Niccolai;G. Niculescu;R. Novotný;R. Paremuzyan;I. Pegg;K. Price;H. Rashad;J. Roche;R. Rondón;B. Sawatzky;V. Sergeyeva;S. vSirca;A. Somov;I. Strakovsky;V. Tadevosyan;R. Trotta;H. Voskanyan;E. Voutier;B. Wojtsekhowski;S. Wood;S. Zhamkochyan;J. Zhang;S. Zhao;C. Zorn