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Jefferson Science Associates, LLC Managing and Operating the Thomas Jefferson National Accelerator Facility
for the U.S. Department of Energy
FY2019 JSA Initiatives Fund Proposal Summary Sheet
Proposal title
Total leveraged support / matching funds. Details of funds must be
included in budget proposal.
Lab user: Identify University affiliation (email / phone)Joint appointee: identify University and Lab division association (email / phone)
Project End Date (month/year) Project Start Date (month/year)
Total funds requested
To be completed by JSA: Total funds awarded
Principal Investigator (PI)
Institutional affiliation Mailing address Email / phone #
Check one category: If PI is a Lab employee, your identification of the appropriate Associate Director below represents the acknowledgement of that AD with your submittal of proposal. No signature required.
Proposal: Attach file with
(1) Executive summary and technical proposal
(2) Synopsis of scientific, educational, technical, and/or business merits, and alignment with and significance to Lab’s current program
(3) Proposed evaluation plan to measure success. If this is a request for renewal of funds, assessment of prior year performance,
Your proposal may include letters of endorsement and other supporting information (maximum of 12 pages including this summary sheet and budget sheet)
New proposal
Renewal
Co-PI (if more than 1, add pages with information)
Institutional affiliation Mailing address Email / phone #
Lab employee: Identify Associate Director (email / phone)
Other: Identify Institutional affiliation (email / phone)
Amount
Subtotal Travel
Supplies
Subtotal Supplies
Consultants/Subcontracts
Subtotal Consultants/Subcontracts
Other Expenses. Examples include stipends and honoraria, prizes, awards.
Budget Proposal
Proposal Title
Principal Investigator (PI)
Total funds requested To be completed by JSA: Total funds awarded
Item DescriptionEquipment. Lab users submitting proposals that include equipment to be used at the Lab must review with the appropriate Lab Associate Director. The provision of the name of the AD below represents the AD's acknowledgement. No signature required.
Subtotal Equipment
Travel Support. Provide break-out of estimates for registration fees, lodging and transportation, catering, and facility charges (room rentals, AV equipment; etc.)
Associate Director:
Subtotal Other Expenses
Budget Justification: Include narrative to explain need for each line item in the budget, showing breakdown of calculations used to arrive at the amount in each line of the budget. Note that the JSA Initiatives Fund Program does not support salaries and salary-related expenses, or indirect expenses.
Leveraged Support/Matching Funds information. Identify the source, type and amount of dollar funds from each institution. Include separately estimated value of in-kind support. Your identification of the authorized representative who has committed institutional support for your proposal represents the acknowledgement of that individual. If support or funds are provided by the Lab, identify the associate director (or equivalent) as the authorized representative. Information may be included on separate page.
Total Budget Proposal
Main Organiser:
Jorge Segovia
Institut de Física d'Altes Energies (IFAE) and Barcelona Institute of Science and Technology (BIST),
Universitat Autònoma de Barcelona
E-08193 Bellaterra (Barcelona), Spain
Other organisers:
Craig Roberts
Argonne National Laboratory, Argonne, Illinois, USA
Elena Santopinto
INFN, Sezione di Genova, via Dodecaneso 33, 16146 Genova, Italy
Bogdan Wojtsekhowski
JLab, Newport News, Viriginia, USA
Project Title: Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
Expected number of participants: 32 speakers
Abstract for ECT* website (150 words):
The last decade has seen a dramatic shift in the way we understand the internal structure of
hadronic systems. Modern experimental facilities, new theoretical techniques for the continuum
bound-state problem and progress with lattice-regularized QCD have provided strong indications
that soft quark-quark (diquark) correlations play a crucial role in hadron physics. For example,
theory indicates that the appearance of such correlations is a necessary consequence of dynamical
chiral symmetry breaking, viz. the mechanism responsible for emergence of almost all visible mass in
the universe; experiment has uncovered signals for such correlations in the flavour-separation of the
proton’s electromagnetic form factors; and phenomenology suggests that diquark correlations might
be critical to the formation of exotic tetra- and penta-quark hadrons. This workshop will gather
experimentalists and theorists to undertake a critical review of existing information, consolidate the
facts, and therefrom develop a coherent, unified picture of hadron structure.
Tentative dates: 9-13 September 2018; 23-27 September 2018
Scope of workshop (research area, central questions, novel concepts, broadness of the meeting,
experimental results, maximum 400 words):
Elucidating the importance of correlations within wave functions has long been a central theme of
both experimental and theoretical nuclear physics. Now, modern developments have pushed this to
the forefront of hadron physics, too. Fifty years ago, it was argued that pointlike diquarks might
simplify treatment of the baryon bound-state problem and, subsequently, that they could explain
the so-called missing resonance problem. Today, analyses of the three valence-quark bound-state
problem in quantum field theory predict that the nucleon can be understood as a Borromean bound-
state, in which non-Abelian features of QCD generate confined, non-pointlike yet strongly-correlated
colour-antitriplet diquark clusters inside baryons. This diquark clustering is an emergent
phenomenon, driven by the same mechanism which is responsible for approximately 98% of the
visible mass in the Universe. There is evidence for such clusters in simulations of lattice-QCD; and
their presence within baryons is predicted to have numerous observable consequences, some of
which already have strong experimental support. The idea of diquark clustering is also prominent
amongst competing explanations of the existence and structure of tetra- and penta-quark bound-
states; and there is extensive use of the diquark notion in nuclear and high-energy physics
phenomenology.
Evidently, the notion of diquark correlations is spread widely across modern nuclear and high-energy
physics. At issue, however, is whether all these things called diquarks are the same; and if there are
dissimilarities, can they be understood and reconciled so that experiment can properly search for
clean observable signals.
This workshop will gather experts in experiment and theory in order to address the following key
questions:
• What does lattice QCD have to say about the existence and character of diquark correlations
in baryons and multiquark systems?
• How firmly founded are continuum theoretical predictions of diquark correlations in
hadrons?
• Are there strategies for combining lattice and continuum methods in pursuit of an insightful
understanding of hadron structure?
• Can theory identify experimental observables that would constitute unambiguous
measurable signals for the presence of diquark correlations?
• Is there a traceable connection between the so-called diquarks used to build
phenomenological models of high-energy processes and the correlations predicted by
contemporary theory; and if so, how can such models be improved therefrom?
• Are diquarks the only type of two-body correlations that play a role in hadron structure?
• Which new experiments, facilities and analysis tools are best suited to testing the emerging
picture of two-body correlations in hadrons?
Scientific goals of the meeting (describe the specific goals of the workshop, maximum 200 words):
Modern facilities will probe hadronic interiors as never before, e.g. JLab12 will push form factor
measurements to unprecedented values of momentum transfer and use various charge states,
enabling flavour separations; an EIC will measure valence-quark distribution functions with
previously unachievable precision; and elsewhere, collaborations like BaBar, Belle, BESIII, LHCb, are
discovering new hadrons whose structure does not fit once viable paradigms. The wealth of new
and anticipated information demands that the issue of correlations within hadrons be settled. This
workshop will kick-start that effort. It will
• Elucidate the impacts on our understanding of Nature delivered by the emerging picture of
diquark correlations within hadrons.
• Discuss the reliability of contemporary predictions for empirical signals of diquarks.
• Identify impediments to lattice-QCD delivering a detailed understanding of the character of
diquarks and their role in hadron structure.
• Foster cooperation between continuum- and lattice-QCD that will expedite delivery of real
QCD predictions for hadron spectra and structure in the foreseeable future.
• Identify experiments that can validate the notion of hadrons built from diquark correlations
and discuss known analysis challenges and possible remedies.
It will thereby chart a trail toward a definitive explanation of the internal structure of hadrons with
more than two valence partons.
Outline of the programme (draft schedule (short/long talks, discussion time, plenary/parallel.)):
• Monday – Thursday: 7 presentations per day, 4 before lunch and 3 after lunch
• Friday: 4 presentations before lunch, then close
Presentations will be of 45 minutes duration, which includes 10 minutes of discussion/question time.
Two hours will be allocated to lunch, in order to provide ample time for discussion between the
lecture sessions.
This format has worked effectively on numerous previous occasions.
List of key speakers (15-20; first name, last name, institution, area of expertise, indicate whether
confirmed):
In preparing to submit this proposal, we contacted the following 20 people. Within 10 days, all had
responded positively and agreed to be listed in this submission along with a statement that they
“support the intent of the proposal and will attend so long as their circumstances allow”.
1. Annand, John; University of Glasgow; [email protected]; experimental hadron
physics
2. Bali, Gunnar; Regensburg; [email protected]; lattice QCD
3. Bashir, Adnan; U. Michoacan, Mexico; [email protected]; continuum QCD
4. Cates, Gordon; U. Virginia; [email protected], experimental hadron physics
5. Chang, Lei; Nankai U., China; [email protected]; continuum QCD
6. Chen, Chen; São Paulo IFT; [email protected]; continuum QCD
7. Chen, Ying; Beijing IHEP; [email protected]; Lattice QCD
8. Cisbani, Evaristo; INFN-Roma, [email protected], experimental hadron physics
9. Eichmann, Gernot: Lisbon, CFTP; Continuum QCD
10. Ferretti, Jacopo; Beijing Inst. of Theor. Phys., China; [email protected]; quark models
11. Gothe, Ralf; U. South Carolina; [email protected]; experimental hadron physics
12. Keppel, Cynthia; JLab; [email protected]; experimental hadron physics
13. Lang, Christian; U. Graz; [email protected]; lattice QCD
14. Lebed, Richard; Arizona State U.; [email protected]; quark models
15. Liuti, Simonetta; U. Virginia; [email protected]; QCD phenomenology
16. Mezrag, Cédric; INFN, Rome; [email protected]; continuum QCD
17. Qin, Si-Xue; Chongqing U.; [email protected]; continuum QCD
18. Puckett, Andrew; U. Conn.; [email protected]; experimental hadron physics
19. Richard, Jean-Marc; Lyon IPN; [email protected]; phenomenology of exotic hadrons
20. Skwarnicki, Tomasz; Syracuse U.; [email protected]; experimental high-energy physics
Outside funding (indicate possible sponsoring institutions and the anticipated amount):
INFN-Genova will contribute €2000 toward costs associated with the workshop. The funds will be transferred directly to INFN TIFPA for use in this connection. IFAE (Barcelona) offers competitive grants
for workshops, and we will apply for €2000. We will approach JSA, LLC (managing and operating
contractor of the Thomas Jefferson National Accelerator Facility) and seek a similar amount.
12000 Jefferson Avenue, Newport News, VA 23606 • phone 757.269.7100 • fax 757.269.7363 • www.jlab.org
Jefferson Lab is managed by the Jefferson Science Associates, LLC for the U.S. Department of Energy Office of Science
August 16, 2018
Dear Colleagues:
I am writing this letter to express my strong support for the proposal to the JSA Initiative Funds Program for support for the workshop "Diquark Correlations in Hadron Physics: Origin, Impact and Evidence". This workshop represents a key initiative which will serve to support and promote important collaboration between experiment and theory that will significantly expand and vitalize the JLab 12 GeV science program – and beyond. The idea of diquark clustering as an emergent phenomenon, driven by the same mechanism responsible for the majority of visible mass in the universe, is exciting. It is timely and important to elucidate the impact on our understanding of Nature delivered by the emerging picture of diquark correlations within hadrons.
The Organizing Committee is constituted of respected experimentalists and theorists, and represents a diverse array of expertise and interests to guarantee that the relevant themes are explored in wide ranging debates. The Committee, moreover, represents some who have successfully organized similarly-sized workshops in the past.
For all of the above reasons, I am confident the meeting will achieve its goals. As leader of the Hall A and C experimental groups at Jefferson Lab, who will be supplying key data for the experimental aspects (such as the SuperBigbite Spectrometer Form Factor program) covered by this workshop, I am pleased to lend my full support to this proposal. I will also be very interested I attending!
Sincerely,
Cynthia Keppel, PhD Hall A and C Experimental Group Leader Thomas Jefferson National Accelerator Facility
Main Organiser:
Jorge Segovia
Institut de Física d'Altes Energies (IFAE) and Barcelona Institute of Science and Technology (BIST),
Universitat Autònoma de Barcelona
E-08193 Bellaterra (Barcelona), Spain
Other organisers:
Craig Roberts
Argonne National Laboratory, Argonne, Illinois, USA
Elena Santopinto
INFN, Sezione di Genova, via Dodecaneso 33, 16146 Genova, Italy
Bogdan Wojtsekhowski
JLab, Newport News, Viriginia, USA
Project Title: Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
Expected number of participants: 32 speakers
Abstract for ECT* website (150 words):
The last decade has seen a dramatic shift in the way we understand the internal structure of
hadronic systems. Modern experimental facilities, new theoretical techniques for the continuum
bound-state problem and progress with lattice-regularized QCD have provided strong indications
that soft quark-quark (diquark) correlations play a crucial role in hadron physics. For example,
theory indicates that the appearance of such correlations is a necessary consequence of dynamical
chiral symmetry breaking, viz. the mechanism responsible for emergence of almost all visible mass in
the universe; experiment has uncovered signals for such correlations in the flavour-separation of the
proton’s electromagnetic form factors; and phenomenology suggests that diquark correlations might
be critical to the formation of exotic tetra- and penta-quark hadrons. This workshop will gather
experimentalists and theorists to undertake a critical review of existing information, consolidate the
facts, and therefrom develop a coherent, unified picture of hadron structure.
Tentative dates: 9-13 September 2018; 23-27 September 2018
Scope of workshop (research area, central questions, novel concepts, broadness of the meeting,
experimental results, maximum 400 words):
Elucidating the importance of correlations within wave functions has long been a central theme of
both experimental and theoretical nuclear physics. Now, modern developments have pushed this to
the forefront of hadron physics, too. Fifty years ago, it was argued that pointlike diquarks might
simplify treatment of the baryon bound-state problem and, subsequently, that they could explain
the so-called missing resonance problem. Today, analyses of the three valence-quark bound-state
problem in quantum field theory predict that the nucleon can be understood as a Borromean bound-
state, in which non-Abelian features of QCD generate confined, non-pointlike yet strongly-correlated
colour-antitriplet diquark clusters inside baryons. This diquark clustering is an emergent
phenomenon, driven by the same mechanism which is responsible for approximately 98% of the
visible mass in the Universe. There is evidence for such clusters in simulations of lattice-QCD; and
their presence within baryons is predicted to have numerous observable consequences, some of
which already have strong experimental support. The idea of diquark clustering is also prominent
amongst competing explanations of the existence and structure of tetra- and penta-quark bound-
states; and there is extensive use of the diquark notion in nuclear and high-energy physics
phenomenology.
Evidently, the notion of diquark correlations is spread widely across modern nuclear and high-energy
physics. At issue, however, is whether all these things called diquarks are the same; and if there are
dissimilarities, can they be understood and reconciled so that experiment can properly search for
clean observable signals.
This workshop will gather experts in experiment and theory in order to address the following key
questions:
• What does lattice QCD have to say about the existence and character of diquark correlations
in baryons and multiquark systems?
• How firmly founded are continuum theoretical predictions of diquark correlations in
hadrons?
• Are there strategies for combining lattice and continuum methods in pursuit of an insightful
understanding of hadron structure?
• Can theory identify experimental observables that would constitute unambiguous
measurable signals for the presence of diquark correlations?
• Is there a traceable connection between the so-called diquarks used to build
phenomenological models of high-energy processes and the correlations predicted by
contemporary theory; and if so, how can such models be improved therefrom?
• Are diquarks the only type of two-body correlations that play a role in hadron structure?
• Which new experiments, facilities and analysis tools are best suited to testing the emerging
picture of two-body correlations in hadrons?
Scientific goals of the meeting (describe the specific goals of the workshop, maximum 200 words):
Modern facilities will probe hadronic interiors as never before, e.g. JLab12 will push form factor
measurements to unprecedented values of momentum transfer and use various charge states,
enabling flavour separations; an EIC will measure valence-quark distribution functions with
previously unachievable precision; and elsewhere, collaborations like BaBar, Belle, BESIII, LHCb, are
discovering new hadrons whose structure does not fit once viable paradigms. The wealth of new
and anticipated information demands that the issue of correlations within hadrons be settled. This
workshop will kick-start that effort. It will
• Elucidate the impacts on our understanding of Nature delivered by the emerging picture of
diquark correlations within hadrons.
• Discuss the reliability of contemporary predictions for empirical signals of diquarks.
• Identify impediments to lattice-QCD delivering a detailed understanding of the character of
diquarks and their role in hadron structure.
• Foster cooperation between continuum- and lattice-QCD that will expedite delivery of real
QCD predictions for hadron spectra and structure in the foreseeable future.
• Identify experiments that can validate the notion of hadrons built from diquark correlations
and discuss known analysis challenges and possible remedies.
It will thereby chart a trail toward a definitive explanation of the internal structure of hadrons with
more than two valence partons.
Outline of the programme (draft schedule (short/long talks, discussion time, plenary/parallel.)):
• Monday – Thursday: 7 presentations per day, 4 before lunch and 3 after lunch
• Friday: 4 presentations before lunch, then close
Presentations will be of 45 minutes duration, which includes 10 minutes of discussion/question time.
Two hours will be allocated to lunch, in order to provide ample time for discussion between the
lecture sessions.
This format has worked effectively on numerous previous occasions.
List of key speakers (15-20; first name, last name, institution, area of expertise, indicate whether
confirmed):
In preparing to submit this proposal, we contacted the following 20 people. Within 10 days, all had
responded positively and agreed to be listed in this submission along with a statement that they
“support the intent of the proposal and will attend so long as their circumstances allow”.
1. Annand, John; University of Glasgow; [email protected]; experimental hadron
physics
2. Bali, Gunnar; Regensburg; [email protected]; lattice QCD
3. Bashir, Adnan; U. Michoacan, Mexico; [email protected]; continuum QCD
4. Cates, Gordon; U. Virginia; [email protected], experimental hadron physics
5. Chang, Lei; Nankai U., China; [email protected]; continuum QCD
6. Chen, Chen; São Paulo IFT; [email protected]; continuum QCD
7. Chen, Ying; Beijing IHEP; [email protected]; Lattice QCD
8. Cisbani, Evaristo; INFN-Roma, [email protected], experimental hadron physics
9. Eichmann, Gernot: Lisbon, CFTP; Continuum QCD
10. Ferretti, Jacopo; Beijing Inst. of Theor. Phys., China; [email protected]; quark models
11. Gothe, Ralf; U. South Carolina; [email protected]; experimental hadron physics
12. Keppel, Cynthia; JLab; [email protected]; experimental hadron physics
13. Lang, Christian; U. Graz; [email protected]; lattice QCD
14. Lebed, Richard; Arizona State U.; [email protected]; quark models
15. Liuti, Simonetta; U. Virginia; [email protected]; QCD phenomenology
16. Mezrag, Cédric; INFN, Rome; [email protected]; continuum QCD
17. Qin, Si-Xue; Chongqing U.; [email protected]; continuum QCD
18. Puckett, Andrew; U. Conn.; [email protected]; experimental hadron physics
19. Richard, Jean-Marc; Lyon IPN; [email protected]; phenomenology of exotic hadrons
20. Skwarnicki, Tomasz; Syracuse U.; [email protected]; experimental high-energy physics
Outside funding (indicate possible sponsoring institutions and the anticipated amount):
INFN-Genova will contribute €2000 toward costs associated with the workshop. The funds will be
transferred directly to INFN TIFPA for use in this connection. IFAE (Barcelona) offers competitive grants
for workshops, and we will apply for €2000. We will approach JSA, LLC (managing and operating
contractor of the Thomas Jefferson National Accelerator Facility) and seek a similar amount.
