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Developments in lattice field theory and computer technology have led to dramatic advances in the use of lattice QCD to explore the quark structure of hadrons. This talk will describe selected examples, including structure functions,…

High Energy Physics - Lattice · Physics 2017-08-23 J. W. Negele

An understanding of the confinement mechanism in QCD requires a detailed mapping of the spectrum of hybrid mesons. Understanding confinement means understanding the role of gluons and it is in hybrid mesons that the gluonic degrees of…

High Energy Physics - Experiment · Physics 2007-05-23 Alex R. Dzierba

It has long been expected that the spectrum of hadrons in QCD would be far richer and extensive than experiment has so far revealed. While there have been experimental hints of this richness for some time, it is really only in the last few…

Nuclear Theory · Physics 2016-04-20 M. R. Pennington

In our quest to win a deeper understanding of how QCD actually works, the study of the binding of heavy quarkonia and heavy-flavor hadrons to atomic nuclei offers enormous promise. Modern experimental facilities such as FAIR, Jefferson Lab…

High Energy Physics - Phenomenology · Physics 2018-04-18 G. Krein , A. W. Thomas , K. Tsushima

This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of…

Nuclear Experiment · Physics 2023-08-28 A. Accardi , P. Achenbach , D. Adhikari , A. Afanasev , C. S. Akondi , N. Akopov , M. Albaladejo , H. Albataineh , M. Albrecht , B. Almeida-Zamora , M. Amaryan , D. Androić , W. Armstrong , D. S. Armstrong , M. Arratia , J. Arrington , A. Asaturyan , A. Austregesilo , H. Avagyan , T. Averett , C. Ayerbe Gayoso , A. Bacchetta , A. B. Balantekin , N. Baltzell , L. Barion , P. C. Barry , A. Bashir , M. Battaglieri , V. Bellini , I. Belov , O. Benhar , B. Benkel , F Benmokhtar , W. Bentz , V. Bertone , H. Bhatt , A. Bianconi , L. Bibrzycki , R. Bijker , D. Binosi , D. Biswas , M. Boër , W. Boeglin , S. A. Bogacz , M. Boglione , M. Bondí , E. E. Boos , P. Bosted , G. Bozzi , E. J. Brash , R. A. Briceño , P. D. Brindza , W. J. Briscoe , S. J Brodsky , W. K. Brooks , V. D. Burkert , A. Camsonne , T. Cao , L. S. Cardman , D. S. Carman , M Carpinelli , G. D. Cates , J. Caylor , A. Celentano , F. G. Celiberto , M. Cerutti , Lei Chang , P. Chatagnon , C. Chen , J-P Chen , T. Chetry , A. Christopher , E. Christy , E. Chudakov , E. Cisbani , I. C. Cloët , J. J. Cobos-Martinez , E. O. Cohen , P. Colangelo , P. L. Cole , M. Constantinou , M. Contalbrigo , G. Costantini , W. Cosyn , C. Cotton , A. Courtoy , S. Covrig Dusa , V. Crede , Z. -F. Cui , A. D'Angelo , M. Döring , M. M. Dalton , I. Danilkin , M. Davydov , D. Day , F. De Fazio , M. De Napoli , R. De Vita , D. J. Dean , M. Defurne , A. Deur , B. Devkota , S. Dhital , P. Di Nezza , M. Diefenthaler , S. Diehl , C. Dilks , M. Ding , C. Djalali , S. Dobbs , R. Dupré , D. Dutta , R. G. Edwards , H. Egiyan , L. Ehinger , G. Eichmann , M. Elaasar , L. Elouadrhiri , A. El Alaoui , L. El Fassi , A. Emmert , M. Engelhardt , R. Ent , D. J Ernst , P. Eugenio , G. Evans , C. Fanelli , S. Fegan , C. Fernández-Ramírez , L. A. Fernandez , I. P. Fernando , A. Filippi , C. S. Fischer , C. Fogler , N. Fomin , L. Frankfurt , T. Frederico , A. Freese , Y. Fu , L. Gamberg , L. Gan , F. Gao , H. Garcia-Tecocoatzi , D. Gaskell , A. Gasparian , K Gates , G. Gavalian , P. K. Ghoshal , A. Giachino , F. Giacosa , F. Giannuzzi , G. -P. Gilfoyle , F-X Girod , D. I. Glazier , C. Gleason , S. Godfrey , J. L. Goity , A. A. Golubenko , S. Gonzàlez-Solís , R. W. Gothe , Y. Gotra , K. Griffioen , O. Grocholski , B. Grube , P. Guèye , F. -K. Guo , Y. Guo , L. Guo , T. J. Hague , N. Hammoud , J. -O. Hansen , M. Hattawy , F. Hauenstein , T. Hayward , D. Heddle , N. Heinrich , O. Hen , D. W. Higinbotham , I. M. Higuera-Angulo , A. N. Hiller Blin , A. Hobart , T. Hobbs , D. E Holmberg , T. Horn , P. Hoyer , G. M. Huber , P. Hurck , P. T. P. Hutauruk , Y. Ilieva , I. Illari , D. G Ireland , E. L. Isupov , A. Italiano , I. Jaegle , N. S. Jarvis , DJ Jenkins , S. Jeschonnek , C-R. Ji , H. S. Jo , M. Jones , R. T. Jones , D. C. Jones , K. Joo , M. Junaid , T. Kageya , N. Kalantarians , A. Karki , G. Karyan , A. T. Katramatou , S. J. D Kay , R. Kazimi , C. D. Keith , C. Keppel , A. Kerbizi , V. Khachatryan , A. Khanal , M. Khandaker , A. Kim , E. R. Kinney , M. Kohl , A. Kotzinian , B. T. Kriesten , V. Kubarovsky , B. Kubis , S. E. Kuhn , V. Kumar , T. Kutz , M. Leali , R. F. Lebed , P. Lenisa , L. Leskovec , S. Li , X. Li , J. Liao , H. -W. Lin , L. Liu , S. Liuti , N. Liyanage , Y. Lu , I. J. D. MacGregor , D. J. Mack , L Maiani , K. A. Mamo , G. Mandaglio , C. Mariani , P. Markowitz , H. Marukyan , V. Mascagna , V. Mathieu , J. Maxwell , M. Mazouz , M. McCaughan , R. D. McKeown , B. McKinnon , D. Meekins , W. Melnitchouk , A. Metz , C. A. Meyer , Z. -E. Meziani , C. Mezrag , R. Michaels , G. A. Miller , T. Mineeva , A. S. Miramontes , M. Mirazita , K. Mizutani , H. Mkrtchyan , A. Mkrtchyan , B. Moffit , P. Mohanmurthy , V. I. Mokeev , P. Monaghan , G. Montaña , R. Montgomery , A. Moretti , J. M. Morgado Chàvez , U. Mosel , A. Movsisyan , P. Musico , S. A Nadeeshani , P. M. Nadolsky , S. X. Nakamura , J. Nazeer , A. V. Nefediev , K. Neupane , D. Nguyen , S. Niccolai , I. Niculescu , G. Niculescu , E. R. Nocera , M. Nycz , F. I. Olness , P. G. Ortega , M. Osipenko , E. Pace , B Pandey , P. Pandey , Z. Papandreou , J. Papavassiliou , L. L. Pappalardo , G. Paredes-Torres , R. Paremuzyan , S. Park , B. Parsamyan , K. D. Paschke , B. Pasquini , E. Passemar , E. Pasyuk , T. Patel , C. Paudel , S. J. Paul , J-C. Peng , L. Pentchev , R. Perrino , R. J. Perry , K. Peters , G. G. Petratos , W. Phelps , E. Piasetzky , A. Pilloni , B. Pire , D. Pitonyak , M. L. Pitt , A. D. Polosa , M. Pospelov , A. C. Postuma , J. Poudel , L. Preet , S. Prelovsek , J. W. Price , A. Prokudin , A. J. R. Puckett , J. R. Pybus , S. -X. Qin , J. -W. Qiu , M. Radici , H. Rashidi , A. D Rathnayake , B. A. Raue , T. Reed , P. E. Reimer , J. Reinhold , J. -M. Richard , M. Rinaldi , F. Ringer , M. Ripani , J. Ritman , J. Rittenhouse West , A. Rivero-Acosta , C. D. Roberts , A. Rodas , S. Rodini , J. Rodríguez-Quintero , T. C. Rogers , J. Rojo , P. Rossi , G. C. Rossi , G. Salmè , S. N. Santiesteban , E. Santopinto , M. Sargsian , N. Sato , S. Schadmand , A. Schmidt , S. M Schmidt , G. Schnell , R. A. Schumacher , P. Schweitzer , I. Scimemi , K. C Scott , D. A Seay , J. Segovia , K. Semenov-Tian-Shansky , A. Seryi , A. S Sharda , M. R. Shepherd , E. V. Shirokov , S. Shrestha , U. Shrestha , V. I. Shvedunov , A. Signori , K. J. Slifer , W. A. Smith , A. Somov , P. Souder , N. Sparveris , F. Spizzo , M. Spreafico , S. Stepanyan , J. R. Stevens , I. I. Strakovsky , S. Strauch , M. Strikman , S. Su , B. C. L. Sumner , E. Sun , M. Suresh , C. Sutera , E. S. Swanson , A. P Szczepaniak , P. Sznajder , H. Szumila-Vance , L. Szymanowski , A. -S. Tadepalli , V. Tadevosyan , B. Tamang , V. V. Tarasov , A. Thiel , X. -B. Tong , R. Tyson , M. Ungaro , G. M. Urciuoli , A. Usman , A. Valcarce , S. Vallarino , C. A. Vaquera-Araujo , L. Venturelli , F. Vera , A. Vladimirov , A. Vossen , J. Wagner , X. Wei , L. B. Weinstein , C. Weiss , R. Williams , D. Winney , B. Wojtsekhowski , M. H. Wood , T. Xiao , S. -S. Xu , Z. Ye , C. Yero , C. -P. Yuan , M. Yurov , N. Zachariou , Z. Zhang , Z. W. Zhao , Y. Zhao , X. Zheng , X. Zhou , V. Ziegler , B. Zihlmann , W de Paula , G. F. de Téramond

We present results on the spin carried by quarks and gluons in the nucleon using lattice QCD simulations with physical values of the light, strange and charm quark masses. We also discuss selective results on the x-dependence of parton…

High Energy Physics - Lattice · Physics 2023-01-18 Constantia Alexandrou

This document outlines major directions in theoretical support for the measurement of nucleon resonance transition form factors at the JLab 12 GeV upgrade with the CLAS12 detector. Using single and double meson production, prominent…

The recent series of experiments on polarized lepton-nucleon scattering have provided a strange new twist in the story of the nucleon, some of whose aspects are reviewed in these lectures. In the first lecture, we review some issues arising…

High Energy Physics - Phenomenology · Physics 2007-05-23 John Ellis , Marek Karliner

This is a review of recent developments in hadron structure within the framework of Lattice QCD. The main focus is on recent achievements in the evaluation of nucleon quantities, such as the axial charge, electromagnetic form factors, the…

High Energy Physics - Lattice · Physics 2014-11-04 Martha Constantinou

An overview is presented on the program to study the nucleon structure at the 12 GeV JLab upgrade using the CLAS12 detector. The focus is on deeply virtual exclusive processes to access the generalized parton distributions, semni-inclusive…

Nuclear Experiment · Physics 2015-05-13 Volker D. Burkert

The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new…

Nuclear Experiment · Physics 2015-06-23 R. D. McKeown

Deep inelastic structure functions for the nucleon are obtained in a constituent quark model on the light cone. In the Bjorken limit the parton model is derived. Structure functions from the hadronic tensor at the scale $\mu \sim 0.25$ GeV…

Nuclear Theory · Physics 2009-09-25 H. J. Weber

The J-PARC is a hadron-accelerator facility to provide secondary beams of kaons, pions, neutrinos, muons, and the others together with the primary proton beam for investigating a wide range of science projects. High-energy hadron physics…

High Energy Physics - Phenomenology · Physics 2022-05-10 S. Kumano

This white paper summarizes the scientific opportunities for utilization of the upgraded 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab. It is based on the 52 proposals…

Studies of single spin asymmetries for pion electroproduction in semi-inclusive deep-inelastic scattering are presented using the polarized \sim6 GeV electrons from at the Thomas Jefferson National Accelerator Facility (JLab) and the…

High Energy Physics - Experiment · Physics 2011-06-02 Mher Aghasyan , Harut Avakian

Extensive experimental measurements of spin and azimuthal asymmetries in various processes have stimulated theoretical interest and progress in studies of the nucleon structure. Interpretation of experimental data in terms of parton…

High Energy Physics - Experiment · Physics 2019-10-01 Harut Avakian , Bakur Parsamyan , Alexey Prokudin

The JLab 12 GeV upgrade with a proposed solenoid detector and the CLAS12 detector can provide the granularity and three-dimensional kinematic coverage in longitudinal and transverse momentum, $0.1\le x \le 0.5$, $0.3 \le z \le 0.7$ with…

The structure of the hadron spectrum is discussed in connection with the main phenomena of nonperturbative QCD: confinement and chiral symmetry breaking (CSB). For the higher part of the spectrum ($M \ge 2 GeV$) spin and chiral effects are…

High Energy Physics - Phenomenology · Physics 2009-07-28 Yu. A. Simonov

I discuss recent results from Jefferson Lab on the measurement of inclusive spin structure functions in the nucleon resonance region using polarized electron beams and polarized targets. Results on the first moment of the spin structure…

High Energy Physics - Phenomenology · Physics 2008-11-26 Volker D. Burkert

High-energy electron scattering is a clean and precise probe for measurements of hadronic and nuclear structure, with a key role in understanding the role of high-momentum nucleons (and quarks) in nuclei. Jefferson Lab has dramatically…

Nuclear Experiment · Physics 2022-03-08 John Arrington , Nadia Fomin , Axel Schmidt