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 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2009
 Description
 Book — 1 online resource.
 Summary

The upgrade of the CEBAF Accelerator at Jefferson Lab to 12 GeV will deliver high luminosity and high quality beams, which will open unique opportunities for studies of the quark and gluon structure of hadrons in the valence region. Such physics will be made accessible by substantial additions to the experimental equipment in combination with the increased energy reach of the upgraded machine. The emphasis of the talk will be on the program in a new experimental Hall D designed to search for gluonic excitations.
 Online
 Washington, D.C. : United States. Dept. of Energy. Office of Energy Research ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2002
 Description
 Book — 1 online resource (55 Kilobytes pages ) : digital, PDF file.
 Summary

There has been a remarkable fruitful evolution of our picture of the behavior of strongly interacting matter during the almost two decades that have passed since the parameters of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab were defined. These advances have revealed important new experimental questions best addressed by a CEBAFclass machine at higher energy. Fortunately, favorable technical developments coupled with foresight in the design of the facility make it feasible to triple (double) CEBAF's design (achieved) beam energy from 4 (6) GeV to 12 GeV, in a costeffective manner: the Upgrade can be realized for about 15% of the cost of the initial facility. This Upgrade would enable the worldwide community to greatly expand its physics horizons. In addition to in general improving the figure of merit and momentum transfer range of the present Jefferson Lab physics program, raising the energy of the accelerator to 12 GeV opens up two main new areas of physics: (1) It allows direct exploration of the quarkgluon structure of hadrons and nuclei in the ''valence quark region''. It is known that inclusive electron scattering at the high momentum and energy transfers available at 12 GeV is governed by elementary interactions with quarks and, indirectly, gluons. The original CEBAF energy is not adequate to study this critical region, while with continuous 12 GeV beams one can cleanly access the entire ''valence quark region'' and exploit the newly discovered Generalized Parton Distributions. In addition, a 12GeV Jefferson Lab can essentially complete the studies of the transition from hadronic to quarkgluon degrees of freedom. (2) It allows crossing the threshold above which the origins of quark confinement can be investigated. Specifically, 12 GeV will enable the production of certain ''exotic'' mesons. Whereas in the QCD region of asymptotic freedom ample evidence for the role of gluons exist through the observation of gluon jets, direct evidence for the role of gluons in the QCD confinement region is still missing. Spectroscopy of light ''exotic'' mesons, with glue as essential part of their valence structure, would provide such essential evidence. In addition, with 12 GeV one crosses the threshold for charm production. The nearly final draft of the recent NSAC longrange plan states the 12 GeV Upgrade as one of three construction recommendations: ''We strongly recommend the upgrade of CEBAF at Jefferson Laboratory to 12 GeV as soon as possible. The 12 GeV upgrade of the unique CEBAF facility is critical for our continued leadership in the experimental study of hadronic matter.'' Presently, the status of the 12 GeV Upgrade is that the laboratory is waiting for ''CD0'', a ''Statement of Mission Need'', approval by DOE. Conceptual Design Reports for both accelerator upgrades and the various experimental upgrades (Halls A, B, C, and D) are anticipated by September 15, 2002.
 Online
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1992
 Description
 Book — 1 online resource (page(s) 453 ) : digital, PDF file.
 Summary

We use the heavy quark effective theory to investigate the form factors that describe the semileptonic decays lambda<sup>+</sup><sub>c</sub> > lambda e<sup>+</sup> nu, to order 1/m<sub>c</sub>. We find that a total of four form factors are needed to this order, in contrast with two form factors to leading order, and six form factors in the most general case. We point out some relationships that arise among the general form factors.
 Online
 Washington, D.C. : United States. Dept. of Energy. Office of Energy Research ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2004
 Description
 Book — 1 online resource (237.3 Kilobytes pages ) : digital, PDF file.
 Summary

The 1/N{sub c} power countings for baryon decays and configuration mixings are determined by means of a nonrelativistic quark picture. Such countings are expected to be robust as the quark masses are decreased towards the chiral limit. It is shown that excited baryons have natural widths of Ο(N{sub c}°). These dominant widths are due to the decays that proceed directly to the ground state baryons, with cascade decays being suppressed to Ο(1/N{sub c}). Configuration mixings, defined as mixings between states belonging to different O(3) x SU(2N{sub f}) multiplets, are shown to be subleading in an expansion in 1/√N{sub c}, except for certain mixings between excited multiplets belonging to the mixedsymmetric spinflavor representation and different O(3) representations, where the mixings are of zeroth order in 1/N{sub c}.
 Online
 Karliner, Inga.
 [Stanford, Calif.] 1974.
 Description
 Book — viii,106 leaves. illus.
 Online
SAL1&2 (oncampus shelving), SAL3 (offcampus storage), Special Collections
SAL1&2 (oncampus shelving)  Status 

Stacks  Request 
3781 1975 K  Unknown 
SAL3 (offcampus storage)  Status 

Stacks  Request 
3781 1975 K  Available 
Special Collections  Status 

University Archives  Request onsite access 
03781 1975 K  Inlibrary use 
 Washington, D.C. : United States. Dept. of Energy. Office of Energy Research ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1997
 Description
 Book — 1 online resource (6 p. ) : digital, PDF file.
 Summary

Tevatron experiments have recently set or improved limits on quark and lepton compositeness. Included here are results from √s = 1.8 TeV p{anti p} collider experiments D0 and CDF and from fixed target neutrino experiment CCFR, who report limits on quarkquark, quarklepton, and quarkneutrino compositeness, respectively.
 Online
7. 50 years of quarks [2015]
 Singapore : World Scientific, [2015]
 Description
 Book — 1 online resource (x, 506 pages) : illustrations (some colour)
 Summary

"Today it is known that the atomic nuclei are composed of smaller constituents, the quarks. A quark is always bound with two other quarks, forming a baryon or with an antiquark, forming a meson. The quark model was first postulated in 1964 by Murray GellMann  who coined the name "quark" from James Joyce's novel Finnegans Wake  and by George Zweig, who then worked at CERN. In the present theory of strong interactions  Quantum Chromodynamics proposed by H Fritzsch and GellMann in 1972  the forces that bind the quarks together are due to the exchange of eight gluons. On the 50th anniversary of the quark model, this invaluable volume looks back at the developments and achievements in the elementary particle physics that eventuated from that beautiful model. Written by an international team of distinguished physicists, each of whom have made major developments in the field, the volume provides an essential overview of the present state to the academics and researchers. Provided by publisher.
8. 50 years of quarks [2015]
 Singapore : World Scientific, 2015.
 Description
 Book — 1 online resource : illustrations
 Summary

"Today it is known that the atomic nuclei are composed of smaller constituents, the quarks. A quark is always bound with two other quarks, forming a baryon or with an antiquark, forming a meson. The quark model was first postulated in 1964 by Murray GellMann  who coined the name "quark" from James Joyce's novel Finnegans Wake  and by George Zweig, who then worked at CERN. In the present theory of strong interactions  Quantum Chromodynamics proposed by H Fritzsch and GellMann in 1972  the forces that bind the quarks together are due to the exchange of eight gluons. On the 50th anniversary of the quark model, this invaluable volume looks back at the developments and achievements in the elementary particle physics that eventuated from that beautiful model. Written by an international team of distinguished physicists, each of whom have made major developments in the field, the volume provides an essential overview of the present state to the academics and researchers. Provided by publisher.
 Washington, D.C. : United States. Dept. of Energy. Office of Nuclear Physics ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
 Description
 Book — 1 online resource (Article No. 02021 ) : digital, PDF file.
 Summary

The study of the transverse momentum dependent parton distributions (TMDs) of the nucleon in semiinclusive deepinelastic scattering (SIDIS) has emerged as one of the major physics motivations driving the experimental program using the upgraded 11 GeV electron beam at Jefferson Lab’s Continuous Electron Beam Accelerator Facility (CEBAF). The accelerator construction phase of the CEBAF upgrade is essentially complete and commissioning of the accelerator has begun as of April, 2014. As the new era of CEBAF operations begins, it is appropriate to review the body of published and forthcoming results on TMDs from the 6 GeV era of CEBAF operations, discuss what has been learned, and discuss the key challenges and opportunities for the 11 GeV SIDIS program of CEBAF.
 Online
 Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2001
 Description
 Book — 1 online resource (69 pages ) : digital, PDF file.
 Summary

We study inclusive heavy quark and exclusive heavy quark pair production in pp, pA and AA interactions. Intrinsic transverse momentum is introduced in pp interactions. Nuclear effects, limited to k{sub T} broadening and nuclear shadowing, are introduced in pA and AA interactions. The nuclear dependence is studied over a range of energies, both in fixed target and collider setups.
 Online
 Washington, D.C. : United States. Dept. of Energy. Office of Science ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2007
 Description
 Book — 1 online resource (012019 ) : digital, PDF file.
 Summary

Early scattering experiments revealed that the proton was not a point particle but a bound state of many quarks and gluons. Deep inelastic scattering (DIS) experiments have accurately determined the probability of struck quarks carrying a fraction of the proton's momentum. The current generation of experiments and Lattice QCD calculations will provide detailed multidimensional pictures of the distributions of quarks and gluons inside the proton.
 Online
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2006
 Description
 Book — 1 online resource.
 Summary

In string theory, massless particles often originate from a symmetry breaking of a large gauge symmetry G to its subgroup H. The absence of dimension4 proton decay in supersymmetric theories suggests that ({bar D}, L) are different from {bar H}({bar 5}) in their origins. In this article, we consider a possibility that they come from different irreducible components in g/h. Requiring that all the Yukawa coupling constants of quarks and leptons be generated from the super YangMills interactions of G, we found in the context of GeorgiGlashow H = SU(5) unification that the minimal choice of G is E₇ and E₈ is the only alternative. This idea is systematically implemented in Heterotic String, M theory and F theory, confirming the absence of dimension 4 proton decay operators. Not only H = SU(5) but also G constrain operators of effective field theories, providing nontrivial information.
 Online
 Washington, D.C. : United States. Dept. of Energy ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2009
 Description
 Book — 1 online resource.
 Summary

We outline a plan for a detailed study of SIDIS hadronmultiplicities (pion and kaon). The goal of this plan is to firmly establish the kinematic region over which SIDIS reaction can be reliably interpreted to the nexttoleadingorder QCD in terms of parton distributions and fragmentation functions.
 Online
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2011
 Description
 Book — 1 online resource (4 pages) : digital, PDF file.
 Summary

Gluons inside unpolarized hadrons can be linearly polarized provided they have a nonzero transverse momentum. The simplest and theoretically safest way to probe this distribution of linearly polarized gluons is through cos2φ asymmetries in heavy quark pair or dijet production in electronhadron collisions. Future ElectronIon Collider (EIC) or Large Hadron electron Collider (LHeC) experiments are ideally suited for this purpose. Here we estimate the maximum asymmetries for EIC kinematics.
 Online
15. Accuracy of analytic energy level formulas applied to hadronic spectroscopy of heavy mesons [1988]
 Washington, D.C. : National Aeronautics and Space Administration, Scientific and Technical Information Division, 1988.
 Description
 Book — iii, 22 p. : ill. ; 28 cm.
 Online
SAL3 (offcampus storage)
SAL3 (offcampus storage)  Status 

Stacks  Request 
NASA TM 4042  Available 
 [Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1988.
 Description
 Book — 1 v.
 Online
Green Library
Green Library  Status 

Find it US Federal Documents  
NAS 1.15:4042  Unknown 
17. AdS/CFT and LightFront Holography [electronic resource] : A Theory of Strong Interactions [2009]
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2009
 Description
 Book — 1 online resource (9 pages) : digital, PDF file.
 Summary

Recent developments in the theory of strong interactions are discussed in the framework of the AdS/CFT duality between string theories of gravity in a higher dimension Antide Sitter space and conformal quantum field theories in physical spacetime. This novel theoretical approach, combined with 'lightfront holography', leads to new insights into the quark and gluon structure of hadrons and a viable first approximation to quantum chromodynamics, the fundamental theory of the strong and nuclear interactions.
 Online
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2008
 Description
 Book — 1 online resource (38 pages) : digital, PDF file.
 Summary

The AdS/CFT correspondence between string theory in AdS space and conformal field theories in physical spacetime leads to an analytic, semiclassical model for stronglycoupled QCD which has scale invariance and dimensional counting at short distances and color confinement at large distances. The AdS/CFT correspondence also provides insights into the inherently nonperturbative aspects of QCD such as the orbital and radial spectra of hadrons and the form of hadronic wavefunctions. In particular, we show that there is an exact correspondence between the fifthdimensional coordinate of AdS space z and a specific impact variable ζ which measures the separation of the quark and gluonic constituents within the hadron in ordinary spacetime. This connection leads to AdS/CFT predictions for the analytic form of the frameindependent lightfront wavefunctions (LFWFs) of mesons and baryons, the fundamental entities which encode hadron properties. The LFWFs in turn predict decay constants and spin correlations, as well as dynamical quantities such as form factors, structure functions, generalized parton distributions, and exclusive scattering amplitudes. Relativistic lightfront equations in ordinary spacetime are found which reproduce the results obtained using the fifthdimensional theory and have remarkable algebraic structures and integrability properties. As specific examples we describe the behavior of the pion form factor in the space and timelike regions and determine the Dirac nucleon form factors in the spacelike region. An extension to nonzero quark mass is used to determine hadronic distribution amplitudes of all mesons, heavy and light. We compare our results with the moments of the distribution amplitudes which have recently been computed from lattice gauge theory.
 Online
19. ADS/CFT and QCD [electronic resource]. [2007]
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2007
 Description
 Book — 1 online resource (15 pages) : digital, PDF file.
 Summary

The AdS/CFT correspondence between string theory in AdS space and conformal .eld theories in physical spacetime leads to an analytic, semiclassical model for stronglycoupled QCD which has scale invariance and dimensional counting at short distances and color confinement at large distances. Although QCD is not conformally invariant, one can nevertheless use the mathematical representation of the conformal group in fivedimensional antide Sitter space to construct a first approximation to the theory. The AdS/CFT correspondence also provides insights into the inherently nonperturbative aspects of QCD, such as the orbital and radial spectra of hadrons and the form of hadronic wavefunctions. In particular, we show that there is an exact correspondence between the fifthdimensional coordinate of AdS space z and a specific impact variable ζ which measures the separation of the quark and gluonic constituents within the hadron in ordinary spacetime. This connection allows one to compute the analytic form of the frameindependent lightfront wavefunctions, the fundamental entities which encode hadron properties and allow the computation of decay constants, form factors, and other exclusive scattering amplitudes. New relativistic lightfront equations in ordinary spacetime are found which reproduce the results obtained using the 5dimensional theory. The effective lightfront equations possess remarkable algebraic structures and integrability properties. Since they are complete and orthonormal, the AdS/CFT model wavefunctions can also be used as a basis for the diagonalization of the full lightfront QCD Hamiltonian, thus systematically improving the AdS/CFT approximation.
 Online
 Washington, D.C. : United States. Dept. of Energy. ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2008
 Description
 Book — 1 online resource (12 pages) : digital, PDF file.
 Summary

We identify an invariant lightfront coordinate ζ which allows the separation of the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a singlevariable lightfront Schroedinger equation for QCD which determines the eigenspectrum and the lightfront wavefunctions of hadrons for general spin and orbital angular momentum. This frameindependent lightfront wave equation is equivalent to the equations of motion which describe the propagation of spinJ modes on antide Sitter (AdS) space. Lightfront holography is a remarkable feature of AdS/CFT: it allows hadronic amplitudes in the AdS fifth dimension to be mapped to frameindependent lightfront wavefunctions of hadrons in physical spacetime, thus providing a relativistic description of hadrons at the amplitude level. In principle, the model can be systematically improved by diagonalizing the full QCD lightfront Hamiltonian on the AdS/QCD basis. Quark and gluon hadronization can be computed at the amplitude level by convoluting the offshell T matrix calculated from the QCD lightfront Hamiltonian with the hadronic lightfront wavefunctions. We also note the distinction between static observables such as the probability distributions computed from the square of the lightfront wavefunctions versus dynamical observables such as the structure functions and the leadingtwist singlespin asymmetries measured in deep inelastic scattering which include the effects of initial and finalstate interactions.
 Online