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Novel QCD Phenomena at JLab
High Energy Physics - Phenomenology · Submitted 13 Nov 2015
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim I will also discuss evidence that the antishadowing of nuclear structure functions is non-universal; i.e., flavor dependent.
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The abstract, sentence by sentence
The $12~$GeV electron beam energy at Jefferson Laboratory provides ideal electroproduction kinematics for many novel tests of QCD in both the perturbative and nonperturbative domains. These include tests of the quark flavor dependence of the nuclear structure functions; measurements of the QCD running coupling at soft scales; measurements of the diffractive deep inelastic structure function; measurements of exclusive contributions to the $T-$ odd Sivers function; the identification of ``odderon" contributions; tests of the spectroscopic and dynamic features of light-front holography, as well as ``meson-nucleon supersymmetry"; the production of open and hidden charm states in the heavy-quark threshold domain; and the production of exotic hadronic states such as pentaquarks, tetraquarks and even octoquarks containing charm quarks. One can also study fundamental features of QCD at JLab$12$ such as the ``hidden color" of nuclear wavefunctions, the ``color transparency" of hard exclusive processes, and the ``intrinsic strangeness and charm" content of the proton wavefunction. I will also discuss evidence that the antishadowing of nuclear structure functions is non-universal; i.e., flavor dependent. I will also present arguments why shadowing and antishadowing phenomena may be incompatible with the momentum and other sum rules for the nuclear parton distribution functions. I will also briefly review new insights into the hadron mass scale, the hadron mass spectrum, the functional form of the QCD coupling in the nonperturbative domain predicted by light-front holography, and how superconformal algebra leads to remarkable supersymmetric relations between mesons and baryons.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The $12~$GeV electron beam energy at Jefferson Laboratory provides ideal electroproduction kinematics for many novel tests of QCD in both the perturbative and nonperturbative domains. | background 0.83 | 0.07 | 0.07 | asserted 1.00 |
| s1 | These include tests of the quark flavor dependence of the nuclear structure functions; measurements of the QCD running coupling at soft scales; measurements of the diffractive deep inelastic structure function; measurements of exclusive contributions to the $T-$ odd Sivers function; the identification of ``odderon" contributions; tests of the spectroscopic and dynamic features of light-front holography, as well as ``meson-nucleon supersymmetry"; the production of open and hidden charm states in the heavy-quark threshold domain; and the production of exotic hadronic states such as pentaquarks, tetraquarks and even octoquarks containing charm quarks. | contribution 0.61 | 0.12 | 0.06 | asserted 0.82 |
| s2 | One can also study fundamental features of QCD at JLab$12$ such as the ``hidden color" of nuclear wavefunctions, the ``color transparency" of hard exclusive processes, and the ``intrinsic strangeness and charm" content of the proton wavefunction. | contribution 0.55 | 0.12 | 0.04 | hedged possibility 0.83 |
| s3 | I will also discuss evidence that the antishadowing of nuclear structure functions is non-universal; i.e., flavor dependent. | result 0.74 | 0.57 | 0.19 | asserted 0.86 |
| s4 | I will also present arguments why shadowing and antishadowing phenomena may be incompatible with the momentum and other sum rules for the nuclear parton distribution functions. | interpretation 0.63 | 0.45 | 0.15 | hedged possibility 0.99 |
| s5 | I will also briefly review new insights into the hadron mass scale, the hadron mass spectrum, the functional form of the QCD coupling in the nonperturbative domain predicted by light-front holography, and how superconformal algebra leads to remarkable supersymmetric relations between mesons and baryons. | contribution 0.80 | 0.31 | 0.09 | asserted 0.89 |
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The paper
Original abstract
The $12~$GeV electron beam energy at Jefferson Laboratory provides ideal electroproduction kinematics for many novel tests of QCD in both the perturbative and nonperturbative domains. These include tests of the quark flavor dependence of the nuclear structure functions; measurements of the QCD running coupling at soft scales; measurements of the diffractive deep inelastic structure function; measurements of exclusive contributions to the $T-$ odd Sivers function; the identification of ``odderon" contributions; tests of the spectroscopic and dynamic features of light-front holography, as well as ``meson-nucleon supersymmetry"; the production of open and hidden charm states in the heavy-quark threshold domain; and the production of exotic hadronic states such as pentaquarks, tetraquarks and even octoquarks containing charm quarks. One can also study fundamental features of QCD at JLab$12$ such as the ``hidden color" of nuclear wavefunctions, the ``color transparency" of hard exclusive processes, and the ``intrinsic strangeness and charm" content of the proton wavefunction. I will also discuss evidence that the antishadowing of nuclear structure functions is non-universal; i.e., flavor dependent. I will also present arguments why shadowing and antishadowing phenomena may be incompatible with the momentum and other sum rules for the nuclear parton distribution functions. I will also briefly review new insights into the hadron mass scale, the hadron mass spectrum, the functional form of the QCD coupling in the nonperturbative domain predicted by light-front holography, and how superconformal algebra leads to remarkable supersymmetric relations between mesons and baryons.
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Papers whose main result relates to this one's
States the same result 2 papers
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I also discuss evidence that the antishadowing of nuclear structure functions is non-universal, i.e., flavor dependent, and why shadowing and antishadowing phenomena may be incompatible with the momentum and other sum rules for the nuclear parton distribution functions.
Novel Perspectives from Light-Front QCD, Superconformal Algebra, and Light-Front Holography · 0.98
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The antishadowing of nuclear structure functions is shown to be quark-flavor specific, suggesting that some part of the anomalous NuTeV result for $\sin^2\theta_W$ could be due to the non-universality of nuclear antishadowing for charged and neutral currents.
What it cites · 35 sentences without a confident label
Builds on 4 papers
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It is even possible to electroproduce an “octoquark" bound state [ref] with eight quarks $|c̅ c uud udd >$ on a deuteron target $e D →[D̅^0 n] Λ_c e$.
Novel Six-Quark Hidden-Color Dibaryon States in QCD · Charm Production at Jab12 · 0.83
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These results can be extended [ref] to effective QCD light-front equations for both mesons and baryons by using the generalized supercharges of superconformal algebra [ref] .
Superconformal Baryon-Meson Symmetry and Light-Front Holographic QCD · Color Confinement and Supersymmetry in Hadron Physics from LF Holography · 0.95
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These results can be extended [ref] to effective QCD light-front equations for both mesons and baryons by using the generalized supercharges of superconformal algebra [ref] .
Baryon Spectrum from Superconformal Quantum Mechanics and its Light-Front Holographic Embedding · Color Confinement and Supersymmetry in Hadron Physics from LF Holography · 0.95
Uses the method or tool of 1 paper
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This analysis of multi-scale processes uses BLM/PMC renormalization scale setting [ref] .
A Systematic All-Orders Method to Eliminate Renormalization-Scale and Scheme Ambiguities in PQCD · Charm Production at Jab12 · 0.99
Cites as support 1 paper
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I will also discuss in this report the indications that the antishadowing of nuclear structure functions is nonuniversal, i.e., flavor dependent [ref] .
Nuclear PDFs from neutrino deep inelastic scattering · Introduction · 1.00
Cites as background 2 papers
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The proposed LHeC electron-proton collider [ref] at CERN will extend electroproduction studies to the multi-TeV domain where the collisions of top quarks, and electroweak bosons can be studied.
A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector · Introduction · 0.89
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The new $12$ GeV electron beam at Jefferson Laboratory [ref] provides ideal kinematics for testing many aspects quantum chromodynamics (QCD), the fundamental theory of hadron physics.
The 12 GeV JLab Upgrade Project · Introduction · 0.80
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