Pith. sign in

REVIEW 3 cited by

Confronting perturbative QCD with the hardest exclusive reactions: kaon electromagnetic form factors

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2407.21120 v1 pith:NLAC7HMP submitted 2024-07-30 hep-ph hep-exhep-lat

Long-Bin Chen , Wen Chen , Feng Feng , Yu Jia This is my paper · ORCID
classification hep-phhep-exhep-lat
keywords kaonemffsexclusiveperturbativecorrectionsdataelectromagneticfactors
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

Among countless channels of hard exclusive reactions, the kaon electromagnetic form factors (EMFFs) are of special interest, which have been measured up to $Q^2 \sim 50\;{\rm GeV}^2$ in the timelike domain. The kaon EMFFs thereby serve an ideal platform to critically examine the validity and effectiveness of perturbative QCD (pQCD) in accounting for hard exclusive processes. In this work we confront the pQCD predictions that incorporate the next-to-next-to-leading-order (NNLO) perturbative corrections, with the available kaon EMFFs data set from experimental measurements and from lattice predictions. The inclusion of the NNLO corrections turns out to have a substantial and positive impact. If the profiles of the kaon light-cone distribution amplitudes (LCDAs) are taken from the recent lattice QCD prediction by {\tt LPC} Collaboration, the satisfactory agreement between theory and data can be reached for both charged and neutral kaons, in both spacelike and timelike large-$Q^2$ domains.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Form factors of light pseudoscalar mesons from the perturbative QCD approach

    hep-ph 2025-01 conditional novelty 6.0 of 10

    Adding intrinsic transverse momentum distributions to perturbative QCD improves form-factor predictions at low momentum transfer and gives beta_pi^2 = 0.51, beta_K^2 = 0.30 GeV^-2, m_0^pi = 1.84 GeV.

  2. Shedding light on the intrinsic transversal momentum distributions of pion and kaon

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Adding a Gaussian intrinsic transverse momentum distribution to pQCD form factor calculations lets pion and kaon electromagnetic form factors match data at a few GeV squared and gives m0_pi = 1.84 GeV.

  3. Spin-orbit correlation and spatial distributions for spin-0 hadrons

    hep-ph 2025-01 conditional novelty 4.0 of 10

    For spin-0 hadrons, the kinetic quark spin-orbit correlation reduces to minus half the valence quark number when quark masses are neglected, and its spatial chiral-stress distributions can be obtained from the electro...

Pith tools