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Magnetic moment of the Delta(1232)-resonance in chiral effective field theory

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arxiv nucl-th/0412113 v2 pith:C3PAQBHZ submitted 2004-12-30 nucl-th hep-ph

Vladimir Pascalutsa , Marc Vanderhaeghen (W&M/JLab) This is my paper · ORCID
classification nucl-thhep-ph
keywords deltachiralmagneticmomenteffectivefieldgammaresonance
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We perform a relativistic chiral effective field theory calculation of the radiative pion photoproduction ($\gamma p \to \pi^0 p \gamma'$) in the $\Delta$-resonance region, to next-to-leading order in the ``delta-expansion''. This work is aimed at a model-independent extraction of the $\Delta^+$ magnetic moment from new precise measurements of this reaction. It also predicts the chiral behavior of $\Delta$'s magnetic moment, which can be used to extrapolate the recent lattice QCD results to the physical point.

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Cited by 4 Pith papers

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

  1. Deciphering the nature of $P^{\Sigma}_{\psi s}$ pentaquarks in the light of their electromagnetic multipole moments

    hep-ph 2026-04 unverdicted novelty 7.0 of 10

    QCD light-cone sum rules computation of magnetic dipole, electric quadrupole, and magnetic octupole moments for Σ-type P_ψs pentaquarks, with quark-flavor decomposition and model discriminants.

  2. Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-$\frac{1}{2}$ and $\frac{3}{2}$ states

    hep-ph 2026-07 accept novelty 6.0 of 10

    LCSR calculations of magnetic, quadrupole and octupole moments for S=-2 hidden-charm pentaquarks yield large current-dependent ranges (-4.25 to 5.74 μ_N) dominated by the charm quark in most diquark configurations.

  3. Shedding light on the nature of the $P_{cs}(4459)$ pentaquark state

    hep-ph 2024-11 conditional novelty 5.0 of 10

    QCD light-cone sum rules with three diquark-diquark-antiquark currents predict Pcs(4459) magnetic dipole moments of -0.60, 1.60, and 0.99 nuclear magnetons.

  4. Magnetic Moments of Hidden-Charm Pentaquarks in the Diquark-Diquark-Antiquark Scheme

    hep-ph 2024-11 conditional novelty 4.0 of 10

    Using constituent quark masses and S-wave spin-flavor wave functions, the paper predicts magnetic moments for Pc(4457) and related hidden-charm pentaquarks in the diquark-diquark-antiquark scheme.

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