REVIEW 4 cited by
$Q^2$ Dependence of Quadrupole Strength in the $\gamma^*p\to\Delta^+(1232)\to p \pi^0$ Transition
Not yet reviewed by Pith; the record is open.
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
abstract
Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the $Q^2$ dependence of the magnetic ($M_{1+}$), electric ($E_{1+}$), and scalar ($S_{1+}$) multipoles in the $\gamma^* p \to \Delta^+ \to p \pi^0$ transition. We report new experimental values for the ratios $E_{1+}/M_{1+}$ and $S_{1+}/M_{1+}$ over the range $Q^2$= 0.4-1.8 GeV$^2$, extracted from precision $p(e,e 'p)\pi^{\circ}$ data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.
Forward citations
Cited by 4 Pith papers
-
Multipole structure of the $N \to \Delta$ Transition Generalized Parton Distributions
The four N oΔ transition GPDs decompose into monopole, two dipole and quadrupole multipole GPDs in one-to-one correspondence with light-front helicity amplitudes, defining impact-parameter transition densities at zero...
-
Tensor form factors of decuplet hyperons in QCD
QCD sum rules yield numerical tensor form factors for Ω^-, Σ^{*+}, and Ξ^{*-} up to 10 GeV² together with forward-limit quark tensor charges.
-
Weak charged current induced electron and positron scattering off proton at JLab and MAMI energies
Calculated cross sections and spin observables for weak charged-current e±+p scattering at JLab-MAMI energies, presented as benchmarks to extract the axial dipole mass and test G- and T-invariance.
-
Electroexcitation of Nucleon Resonances and the Emergence of Hadron Mass
A review argues that Jefferson Lab electroproduction data on nucleon resonances, analyzed with continuum Schwinger methods, confirm a momentum-dependent dressed quark mass, the essence of emergent hadron mass.
Discussion (0). Continue with ORCID to comment.