Electromagnetic properties of baryons in a relativistic quark model

Merten, D.; Löring, U.; Metsch, B.; Petry, Herbert R.

doi:10.1140/epja/i2002-10304-5

Cited by 10 publications

(19 citation statements)

References 13 publications

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“…All these uncertainties are added in quadrature and presented as the model uncertainties of the amplitudes. predicted by the SQTM, is confirmed by the results obtained in dynamical quark models: by the light-front relativistic quark model [62] at Q 2 = 0 and in the quark models [63,64] at all Q 2 under consideration. As it can be seen from Fig.…”

Section: Fig 16: (Color Online) Kinematics In Qsupporting

confidence: 75%

“…20 along with the predictions of quark models: the relativistic model of Ref. [63] and the nonrelativistic models [64,65]. All models underestimate the value of the amplitude A 3/2 .…”

Section: Fig 16: (Color Online) Kinematics In Qmentioning

confidence: 88%

“…The dashed and solid curves correspond to the quark model predictions of Refs. [63] and [64], respectively. [48].…”

Section: Fig 16: (Color Online) Kinematics In Qmentioning

confidence: 99%

“…The curves correspond to quark model predictions: dashed -Ref. [63], solid -Ref. [64], dashed-dotted -Ref.…”

Section: Fig 16: (Color Online) Kinematics In Qmentioning

confidence: 99%

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Measurements ofep→e′π+nat1.6<W<2.0 GeV and extraction of nucleon

Park¹,

Aznauryan²,

Burkert³

et al. 2015

Phys. Rev. C

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Differential cross sections of the exclusive process ep → e π + n were measured with good precision in the range of the photon virtuality Q 2 = 1.8 − 4.5 GeV 2 , and the invariant mass range of the π + n final state W = 1.6 − 2.0 GeV using the CEBAF Large Acceptance Spectrometer. Data were collected with nearly complete coverage in the azimuthal and polar angles of the nπ + center-of-mass system. More than 37,000 cross section points were measured. The contributions of the isospin I = + resonance our analysis shows significant strength for the A 1/2 amplitude at Q 2 < 2.5 GeV 2 .

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Section: Fig 16: (Color Online) Kinematics In Qsupporting

confidence: 75%

“…20 along with the predictions of quark models: the relativistic model of Ref. [63] and the nonrelativistic models [64,65]. All models underestimate the value of the amplitude A 3/2 .…”

Section: Fig 16: (Color Online) Kinematics In Qmentioning

confidence: 88%

See 2 more Smart Citations

Measurements ofep→e′π+nat1.6<W<2.0 GeV and extraction of nucleon

Park¹,

Aznauryan²,

Burkert³

et al. 2015

Phys. Rev. C

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show abstract

“…[1][2][3] as well as some selected electroweak observables such as electromagnetic form factors, charge radii and magnetic moments, see e.g. [4,5].…”

Section: Introductionmentioning

confidence: 99%

Quark model description of baryon properties

Metsch

Petry

2017

EPJ Web Conf.

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Abstract. The goal of this project was a systematic calculation, consistent with the mass spectrum, of electroweak properties of baryons, as well as of the hadronic two-body decays of baryon resonances. The basis of the calculations was a relativistically covariant quark model for mesons and baryons, which allows for the calculation of (momentum dependent) hadronic form factors and coupling vertices in the relevant photon and hadron induced reactions and simultaneously describes the hadronic mass spectrum up to 3 GeV.

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Exclusive Single Pion Electroproduction off the Proton: Results from CLAS

Park

2016

Few-Body Syst

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Exclusive meson electroproduction off protons is a powerful tool to probe the effective degrees of freedom in excited nucleon states at the varying distance scale where the transition from the contributions of both quark core and meson-baryon cloud to the quark core dominance. During the past decade, the CLAS collaboration has executed a broad experimental program to study the excited states of the proton using polarized electron beam and both polarized and unpolarized proton targets. The measurements covered a broad kinematic range in the invariant mass W and photon virtuality Q 2 with nearly full coverage in polar and azimuthal angles in the hadronic CM system. As results, several low-lying nucleon resonance states in particular from pion threshold to W < 1.6 GeV have been explored. These include ∆( 1232) 3 2 + , N (1440) 1 2 + , N (1520) 3 2 − , and N (1535) 1 2 − states. In addition, we recently published the differential cross sections and helicity amplitudes of the reaction γ * p → nπ + at higher W (1.6 to 2.0 GeV) which are the N (1675) 5 2 − , N (1680) 5 2 + , and N (1710) 1 2 +states. These excited states with isospin 1/2 and with masses near 1.7 GeV can be accessed in single nπ + production as there are no isospin 3/2 states present in this mass range with the same spin-parity assignments. I will briefly discuss these states from CLAS results of the single charged pion electroproduction data.

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Electromagnetic properties of baryons in a relativistic quark model

Cited by 10 publications

References 13 publications

Measurements ofep→e′π+nat1.6<W<2.0 GeV and extraction of nucleon

Measurements ofep→e′π+nat1.6<W<2.0 GeV and extraction of nucleon

Quark model description of baryon properties

Exclusive Single Pion Electroproduction off the Proton: Results from CLAS

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