0000000000726461

AUTHOR

Antonio Silva

0000-0003-0197-9321

showing 2 related works from this author

Anomalous tensor magnetic moments and form factors of the proton in the self-consistent chiral quark-soliton model

2010

We investigate the form factors of the chiral-odd nucleon matrix element of the tensor current. In particular, we aim at the anomalous tensor magnetic form factors of the nucleon within the framework of the SU(3) and SU(2) chiral quark-soliton model. We consider $1/N_c$ rotational corrections and linear effects of SU(3) symmetry breaking with the symmetry-conserving quantization employed. We first obtain the results of the anomalous tensor magnetic moments for the up and down quarks: $\kappa_{T}^{u}=3.56$ and $\kappa_{T}^{d}=1.83$, respectively. The strange anomalous tensor magnetic moment is yielded to be $\kappa_{T}^{s}=0.2\sim -0.2$, that is compatible with zero. We also calculate the co…

PhysicsNuclear and High Energy PhysicsParticle physicsMagnetic momentNuclear TheoryQuark modelHadronHigh Energy Physics - Lattice (hep-lat)FOS: Physical sciencesElementary particleSymmetry groupHigh Energy Physics - ExperimentNuclear Theory (nucl-th)High Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - LatticeSymmetry breakingNucleonSpecial unitary group
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Tensor charges and form factors of SU(3) baryons in the self-consistent SU(3) chiral quark-soliton model

2010

We investigate the tensor form factors of the baryon octet within the framework of the chiral quark-soliton model, emphasizing those of the nucleon, taking linear 1/N_c rotational as well as linear m_s corrections into account, and applying the symmetry-conserving quantization. We explicitly calculate the tensor form factors H_{T}^{q}(Q^{2}) corresponding to the generalized parton distributions H_{T}(x,\xi,t). The tensor form factors are obtained for the momentum transfer up to Q^{2}\leq1\,\mathrm{GeV}^{2} and at a renormalization scale of 0.36\,\mathrm{GeV}^{2}. We find for the tensor charges \delta u=1.08, \delta d=-0.32, \delta s=-0.01 and discuss their physical consequences, comparing t…

QuarkNuclear and High Energy PhysicsParticle physicsNuclear TheoryHigh Energy Physics::LatticeHadronFOS: Physical sciencesElementary particleSymmetry group01 natural sciencesHigh Energy Physics - ExperimentNuclear Theory (nucl-th)High Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsPhysics010308 nuclear & particles physicsQuark modelHigh Energy Physics::PhenomenologyHyperon16. Peace & justiceBaryonHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNucleon
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