Tomography of light mesons in the light-cone quark model

Kaur, Satvir; Kumar, Narinder; Lan, Jiangshan; Mondal, Chandan; Dahiya, Harleen

doi:10.1103/physrevd.102.014021

Cited by 15 publications

(7 citation statements)

References 168 publications

(210 reference statements)

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“…Refs. [312,[338][339][340][341][342][343][344][345][346][347][348][349][350][351][352][353]. One unifying Momentum-space conventions used when defining the in-pion quark-quark correlator in Eq.…”

Section: Three Dimensional Structure Of Nambu-goldstone Modes a Gener...mentioning

confidence: 99%

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Insights into the Emergence of Mass from Studies of Pion and Kaon Structure

Roberts,

Richards,

Horn

et al. 2021

Preprint

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There are two mass generating mechanisms in the standard model of particle physics (SM). One is related to the Higgs boson and fairly well understood. The other is embedded in quantum chromodynamics (QCD), the SM's strong interaction piece; and although responsible for emergence of the roughly 1 GeV mass scale that characterises the proton and hence all observable matter, the source and impacts of this emergent hadronic mass (EHM) remain puzzling. As bound states seeded by a valence-quark and -antiquark, pseudoscalar mesons present a simpler problem in quantum field theory than that associated with the nucleon. Consequently, there is a large array of robust predictions for pion and kaon properties whose empirical validation will provide a clear window onto many effects of both mass generating mechanisms and the constructive interference between them. This has now become significant because new-era experimental facilities, in operation, construction, or planning, are capable of conducting such tests and thereby contributing greatly to resolving the puzzles of EHM. These aspects of experiment, phenomenology, and theory, along with contemporary successes and challenges, are sketched herein, simultaneously highlighting the potential gains that can accrue from a coherent effort aimed at finally reaching an understanding of the character and structure of Nature's Nambu-Goldstone modes.

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Section: Three Dimensional Structure Of Nambu-goldstone Modes a Gener...mentioning

confidence: 99%

“…Thus, extensions of kaon studies such as those in Refs. [343,347,353] are to likely attract much attention.…”

Section: B Twist-two Generalised Parton Distribution Functionsmentioning

confidence: 99%

Insights into the Emergence of Mass from Studies of Pion and Kaon Structure

Roberts,

Richards,

Horn

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…In contrast, increasingly many robust connections are being drawn between EHM and the properties of pions and kaons, revealed in both phenomenological sketches and theoretical predictions [5][6][7][8][15][16][17][18][19][20][21][22][23][24][25]. Importantly, the links can be verified empirically [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Revealing pion and kaon structure via generalised parton distributions

Raya,

Cui,

Chang

et al. 2021

Preprint

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Clear windows onto emergent hadron mass (EHM) and modulations thereof by Higgs boson interactions are provided by observable measures of pion and kaon structure, many of which are accessible via generalised parton distributions (GPDs). Beginning with algebraic GPD Ansätze, constrained entirely by hadron-scale π and K valence-parton distribution functions (DFs), in whose forms both EHM and Higgs boson influences are manifest, numerous illustrations are provided. They include the properties of electromagnetic form factors, impact parameter space GPDs, gravitational form factors and associated pressure profiles, and the character and consequences of all-orders evolution. The analyses predict that mass-squared gravitational form factors are stiffer than electromagnetic form factors; reveal that K pressure profiles are tighter than π profiles, with both mesons sustaining near-core pressures at magnitudes similar to that expected at the core of neutron stars; deliver parameter-free predictions for π and K valence, glue, and sea GPDs at the resolving scale ζ = 2 GeV; and predict that at this scale the fraction of meson mass-squared carried by glue and sea combined matches that lodged with the valence degrees-of-freedom, with a similar statement holding for mass-squared radii.

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“…[2, 9-15, 32, 33, 57-72], while for the kaon, foundations are just being laid and several significant analyses can be found in Refs. [15,[71][72][73][74][75][76][77].…”

Section: Introductionmentioning

confidence: 99%

Generalized parton distributions and spin structures of light mesons from a light-front Hamiltonian approach

Adhikari,

Mondal,

Nair

et al. 2021

Preprint

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We present the generalized parton distributions (GPDs) for the valence quarks of the pion and the kaon in both momentum space and position space within the basis light-front quantization framework. These GPDs are obtained from the eigenvectors of a light-front effective Hamiltonian consisting of the holographic quantum chromodynamics (QCD) confinement potential, a complementary longitudinal confinement potential, and the color-singlet Nambu-Jona-Lasinio interactions for the valence quarks of mesons. We then calculate the generalized form factors of the pion and the kaon from the moments of these GPDs. Combining the tensor form factors with the electromagnetic form factors, we subsequently evaluate the impact parameter dependent probability density of transversely polarized quarks inside the pion and the kaon. The numerical results for the generalized form factors, tensor charges, as well as those for the probability densities and the transverse shift of the polarized densities are consistent with lattice QCD simulations and with chiral quark models.

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Tomography of light mesons in the light-cone quark model

Cited by 15 publications

References 168 publications

Insights into the Emergence of Mass from Studies of Pion and Kaon Structure

Insights into the Emergence of Mass from Studies of Pion and Kaon Structure

Revealing pion and kaon structure via generalised parton distributions

Generalized parton distributions and spin structures of light mesons from a light-front Hamiltonian approach

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