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Perturbative QCD Analysis of Near Threshold Heavy Quarkonium Photoproduction at Large Momentum Transfer
High Energy Physics - Phenomenology · Submitted 22 Mar 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim From an explicit calculation, we show that the conventional power counting method will be modified and the three quark Fock state with nonzero orbital angular momentum dominates the near threshold production.
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The abstract, sentence by sentence
We apply perturbative QCD to investigate the near threshold heavy quarkonium photoproduction at large momentum transfer. From an explicit calculation, we show that the conventional power counting method will be modified and the three quark Fock state with nonzero orbital angular momentum dominates the near threshold production. It carries a power behavior of $1/(-t)^5$ for the differential cross section. We further comment on the impact of our results on the interpretation of the experiment measurement in terms of the gluonic gravitational form factors of the proton.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We apply perturbative QCD to investigate the near threshold heavy quarkonium photoproduction at large momentum transfer. | contribution 0.91 | 0.92 | 0.05 | asserted 0.83 |
| s1 | From an explicit calculation, we show that the conventional power counting method will be modified and the three quark Fock state with nonzero orbital angular momentum dominates the near threshold production. | result 0.99 | 0.95 | 0.77 | asserted 1.00 |
| s2 | It carries a power behavior of $1/(-t)^5$ for the differential cross section. | result 1.00 | 0.87 | 0.22 | asserted 1.00 |
| s3 | We further comment on the impact of our results on the interpretation of the experiment measurement in terms of the gluonic gravitational form factors of the proton. | interpretation 1.00 | 0.45 | 0.05 | unclear 0.85 |
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The paper
Original abstract
We apply perturbative QCD to investigate the near threshold heavy quarkonium photoproduction at large momentum transfer. From an explicit calculation, we show that the conventional power counting method will be modified and the three quark Fock state with nonzero orbital angular momentum dominates the near threshold production. It carries a power behavior of $1/(-t)^5$ for the differential cross section. We further comment on the impact of our results on the interpretation of the experiment measurement in terms of the gluonic gravitational form factors of the proton.
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References
How the literature uses it
26 arXiv papers cite this in 35 sentences
Papers citing it · 27 sentences without a confident label
Uses its method or tool 1 paper
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They can be regularized by introducing the transverse momentum dependence of the pion DA [ref] to adjust the integration limits from $∫^1_0dz$ to $∫_⟨p_⊥^2⟩/Q^2^1-⟨p_⊥^2⟩/Q^2dz$ [ref] , where $⟨p_⊥^2⟩$ represents the mean-squared transverse momentum of the quark inside the pion and is fixed as $0.04 GeV^2$ [ref] .
The $\sin(2\phi)$ azimuthal asymmetry in exclusive $\pi^0$ production · The $sin(2ϕ)$ azimuthal asymmetry · 0.89
Cites it as background 7 papers
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This has spurred many theoretical developments aiming to extract the critical information on the gluonic structures from such processes [ref] .
Proton's gluon GPDs at large skewness and gravitational form factors from near threshold heavy quarkonium photo-production · Introduction · 0.80
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There have been many theoretical developments in the literature to analyze this process [ref] .
Updated analysis of near-threshold heavy quarkonium production for probe of proton's gluonic gravitational form factors · Introduction · 1.00
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Recent research on nucleon structure has focused on the study of mass decomposition, gravitational form factor of protons, and other related inquiries [ref] .
Mechanical structures inside proton with configurational entropy language · Introduction · 0.97
What it cites · 45 sentences without a confident label
Contests 1 paper
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We will also show, more importantly, the conventional power counting method [ref] have to be modified around threshold.
Counting Rule for Hadronic Light-Cone Wave Functions · Introduction · contest 0.71
Uses the method or tool of 5 papers
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Second, in order to get a nonzero contribution, we have to perform the intrinsic transverse momentum expansion for the hard partonic scattering amplitudes [ref] , which will introduce an additional suppression factor of $1/(-t)$.
Perturbative QCD Analysis of the Nucleon's Pauli Form Factor F_2(Q^2) · Near Threshold Kinematics and Power Counting Analysis · 0.80
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In the end, we find that the scattering amplitude can be summarized as [equation] where $P̅=(p_1+p_2)/2$, ${x}=(x_1,x_2,x_3 )$ represent the momentum fractions carried by the three quarks, $[d x]= d x_1 d x_2 d x_3δ(1-x_1-x_2-x_3)$, and $Φ_3(x_i)$ is the twist-three distribution amplitude of the proton [ref] .
Baryon Distribution Amplitudes in QCD · Near Threshold Kinematics and Power Counting Analysis · 0.91
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The large $(-t)$ behavior can be calculated following the factorization of nucleon form factor calculations [ref] and the non-relativistic QCD (NRQCD) [ref] for the heavy quarkonium production.
Gluon Gravitational Form Factors at Large Momentum Transfer · Introduction · 0.86
Uses data or values from 1 paper
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In Fig. [ref], we apply our power counting analysis to the experimental data from the GlueX collaboration [ref] .
First measurement of near-threshold J/$\psi $ exclusive photoproduction off the proton · Phenomenology Applications · 0.95
Compares with 12 papers
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This is similar to the $A$ form factor calculation in Ref. [ref] .
Gluon Gravitational Form Factors at Large Momentum Transfer · Near Threshold Kinematics and Power Counting Analysis · 0.91
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In particular, we will compare our predictions to recent experimental data from the GlueX collaboration [ref] , where the agreement provides a strong indication that perturbative QCD is applicable here.
First measurement of near-threshold J/$\psi $ exclusive photoproduction off the proton · Introduction · 0.83
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Similar suppression has also been found in the generalized parton distribution (GPD) framework [ref] for exclusive photoproduction of $J/ψ$, where the contribution from $H_g$ GPD is associated with a factor of $(1-ξ)$ with $ξ$ being the skewness parameter [ref] , see also, [ref] and references therein.
Exclusive production of quarkonia as a probe of the GPD E for gluons · Near Threshold Kinematics and Power Counting Analysis · 0.98
Cites as background 16 papers
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The original arguments of Refs. [ref] are based on the vector-meson-dominance and the expansion near the threshold $J/ψN→J/ψN$ system [ref] .
Quarkonium Interactions in QCD · Introduction · 0.87
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The original arguments of Refs. [ref] are based on the vector-meson-dominance and the expansion near the threshold $J/ψN→J/ψN$ system [ref] .
A QCD Calculation of the Interaction of Quarkonium with Nuclei · Introduction · 0.87
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The original arguments of Refs. [ref] are based on the vector-meson-dominance and the expansion near the threshold $J/ψN→J/ψN$ system [ref] .
$J/\psi$ Photoproduction and the Gluon Structure of the Nucleon · Introduction · 0.87
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