Using baryon octet magnetic moments and masses to fix the pion cloud contribution

Ramalho, Gilberto T. F.; Tsushima, Kazuo

doi:10.1016/j.physletb.2010.05.016

Title: Using baryon octet magnetic moments and masses to fix the pion cloud contribution

Journal Article · 11 May 2010 · Physics Letters. B

DOI: https://doi.org/10.1016/j.physletb.2010.05.016 · OSTI ID:983606

Ramalho, Gilberto T. F. ^[1]; Tsushima, Kazuo ^[2]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Centro de Fisica Teorica de Particulas, Lisboa (Portugal)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

In this study, using SU(3) symmetry to constrain the $$\pi BB'$$ couplings, assuming SU(3) breaking comes only from one-loop pion cloud contributions, and using the the covariant spectator theory to describe the photon coupling to the quark core, we show how the experimental masses and magnetic moments of the baryon octet can be used to set a model independent constraint on the strength of the pion cloud contributions to the octet, and hence the nucleon, form factors at $Q^2=0$.

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Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 983606

Report Number(s):: DOE/OR/23177-1004; JLAB-THY-09-1075

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Journal Issue: 2 Vol. 690; ISSN PYLBAJ; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (54)

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Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory Geng, L. S.; Camalich, J. Martin; Vacas, M. J. Vicente Physics Letters B, Vol. 676, Issue 1-3 https://doi.org/10.1016/j.physletb.2009.04.061	journal	June 2009
Symmetries of Baryons and Mesons Gell-Mann, Murray Physical Review, Vol. 125, Issue 3 https://doi.org/10.1103/physrev.125.1067	journal	February 1962
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Light front cloudy bag model: Nucleon electromagnetic form factors Miller, Gerald A. Physical Review C, Vol. 66, Issue 3 https://doi.org/10.1103/physrevc.66.032201	journal	September 2002
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Nucleon magnetic moments beyond the perturbative chiral regime Leinweber, Derek B.; Lu, Ding H.; Thomas, Anthony W. Physical Review D, Vol. 60, Issue 3 https://doi.org/10.1103/physrevd.60.034014	journal	July 1999
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Precision electromagnetic structure of octet baryons in the chiral regime Boinepalli, S.; Leinweber, D. B.; Williams, A. G. Physical Review D, Vol. 74, Issue 9 https://doi.org/10.1103/physrevd.74.093005	journal	November 2006
Strange baryon electromagnetic form factors and SU(3) flavor symmetry breaking Lin, Huey-Wen; Orginos, Kostas Physical Review D, Vol. 79, Issue 7 https://doi.org/10.1103/physrevd.79.074507	journal	April 2009
Relativistic quark model for the Ω − electromagnetic form factors Ramalho, G.; Tsushima, K.; Gross, Franz Physical Review D, Vol. 80, Issue 3 https://doi.org/10.1103/physrevd.80.033004	journal	August 2009
Octet baryon masses and sigma terms from an SU(3) chiral extrapolation Young, R. D.; Thomas, A. W. Physical Review D, Vol. 81, Issue 1 https://doi.org/10.1103/physrevd.81.014503	journal	January 2010
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Electrodynamic Properties of Baryons in the Unitary Symmetry Scheme Coleman, Sidney; Glashow, Sheldon Lee Physical Review Letters, Vol. 6, Issue 8 https://doi.org/10.1103/physrevlett.6.423	journal	April 1961
The Octet Model and its Clebsch-Gordan Coefficients de Swart, J. J. Reviews of Modern Physics, Vol. 35, Issue 4 https://doi.org/10.1103/revmodphys.35.916	journal	October 1963
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Systematic uncertainties in the precise determination of the strangeness magnetic moment of the nucleon Leinweber, D. B.; Boinepalli, S.; Thomas, A. W. arXiv https://doi.org/10.48550/arxiv.hep-lat/0502004	text	January 2005
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Current quark-mass dependence of nucleon magnetic moments and radii Cloët, I. C.; Eichmann, G.; Flambaum, V. V. Few-Body Systems, Vol. 42, Issue 1-4 https://doi.org/10.1007/s00601-008-0240-8	journal	July 2008
Chiral perturbation theory analysis of the baryon magnetic moments Jenkins, Elizabeth; Luke, Michael; Manohar, Aneesh V. Physics Letters B, Vol. 302, Issue 4 https://doi.org/10.1016/0370-2693(93)90430-P	journal	April 1993
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Weak interaction form factors and magnetic moments of octet baryons: Chiral bag model with gluonic effects Tsushima, Kazuo; Yamaguchi, Tetsuya; Kohyama, Y. Nuclear Physics A, Vol. 489, Issue 4 https://doi.org/10.1016/0375-9474(88)90111-X	journal	December 1988
semi-leptonic beta-decay form factors and magnetic moments of octet baryons: Recoil effects and center-of-mass corrections in the cloudy bag model including gluonic effects Tetsuya, Yamaguchi; Kazuo, Tsushima; Kohyama, Y. Nuclear Physics A, Vol. 500, Issue 3 https://doi.org/10.1016/0375-9474(89)90222-4	journal	August 1989
Review of Particle Physics Amsler, C.; Doser, M.; Antonelli, M. Physics Letters B, Vol. 667, Issue 1-5 https://doi.org/10.1016/j.physletb.2008.07.018	journal	September 2008
Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory Geng, L. S.; Camalich, J. Martin; Vacas, M. J. Vicente Physics Letters B, Vol. 676, Issue 1-3 https://doi.org/10.1016/j.physletb.2009.04.061	journal	June 2009
Review of Particle Physics al, W-M Yao et Journal of Physics G: Nuclear and Particle Physics, Vol. 33, Issue 1 https://doi.org/10.1088/0954-3899/33/1/001	journal	July 2006
Symmetries of Baryons and Mesons Gell-Mann, Murray Physical Review, Vol. 125, Issue 3 https://doi.org/10.1103/PhysRev.125.1067	journal	February 1962
Simple quark model with chiral phenomenology Cloet, I. C.; Leinweber, D. B.; Thomas, A. W. Physical Review C, Vol. 65, Issue 6 https://doi.org/10.1103/PhysRevC.65.062201	journal	June 2002
Light front cloudy bag model: Nucleon electromagnetic form factors Miller, Gerald A. Physical Review C, Vol. 66, Issue 3 https://doi.org/10.1103/PhysRevC.66.032201	journal	September 2002
Pure S -wave covariant model for the nucleon Gross, Franz; Ramalho, G.; Peña, M. T. Physical Review C, Vol. 77, Issue 1 https://doi.org/10.1103/PhysRevC.77.015202	journal	January 2008
Fixed-axis polarization states: covariance and comparisons Gross, Franz; Ramalho, G.; Peña, M. T. Physical Review C, Vol. 77, Issue 3 https://doi.org/10.1103/PhysRevC.77.035203	journal	March 2008
Magnetic moments of the nucleon octet in a relativistic quark model with chiral symmetry Barik, N.; Dash, B. K. Physical Review D, Vol. 34, Issue 9 https://doi.org/10.1103/PhysRevD.34.2803	journal	November 1986
Baryon magnetic moments in a QCD-based quark model with loop corrections Ha, Phuoc; Durand, Loyal Physical Review D, Vol. 58, Issue 9 https://doi.org/10.1103/PhysRevD.58.093008	journal	September 1998
Nucleon magnetic moments beyond the perturbative chiral regime Leinweber, Derek B.; Lu, Ding H.; Thomas, Anthony W. Physical Review D, Vol. 60, Issue 3 https://doi.org/10.1103/PhysRevD.60.034014	journal	July 1999
Baryon octet magnetic moments in chiral perturbation theory: More on the importance of the decuplet Puglia, S. J.; Ramsey-Musolf, M. J. Physical Review D, Vol. 62, Issue 3 https://doi.org/10.1103/PhysRevD.62.034010	journal	July 2000
Phenomenological quark model for baryon magnetic moments and beta decay ratios ( G A / G V ) Franklin, Jerrold Physical Review D, Vol. 66, Issue 3 https://doi.org/10.1103/PhysRevD.66.033010	journal	August 2002
Chiral dynamics of baryons in a Lorentz covariant quark model Faessler, Amand; Gutsche, Th.; Lyubovitskij, V. E. Physical Review D, Vol. 73, Issue 11 https://doi.org/10.1103/PhysRevD.73.114021	journal	June 2006
Precision electromagnetic structure of octet baryons in the chiral regime Boinepalli, S.; Leinweber, D. B.; Williams, A. G. Physical Review D, Vol. 74, Issue 9 https://doi.org/10.1103/PhysRevD.74.093005	journal	November 2006
Strange baryon electromagnetic form factors and SU(3) flavor symmetry breaking Lin, Huey-Wen; Orginos, Kostas Physical Review D, Vol. 79, Issue 7 https://doi.org/10.1103/PhysRevD.79.074507	journal	April 2009
Relativistic quark model for the Ω − electromagnetic form factors Ramalho, G.; Tsushima, K.; Gross, Franz Physical Review D, Vol. 80, Issue 3 https://doi.org/10.1103/PhysRevD.80.033004	journal	August 2009
SU(6) and Electromagnetic Interactions Bég, M. A. B.; Lee, B. W.; Pais, A. Physical Review Letters, Vol. 13, Issue 16 https://doi.org/10.1103/PhysRevLett.13.514	journal	October 1964
Electrodynamic Properties of Baryons in the Unitary Symmetry Scheme Coleman, Sidney; Glashow, Sheldon Lee Physical Review Letters, Vol. 6, Issue 8 https://doi.org/10.1103/PhysRevLett.6.423	journal	April 1961
The Octet Model and its Clebsch-Gordan Coefficients de Swart, J. J. Reviews of Modern Physics, Vol. 35, Issue 4 https://doi.org/10.1103/RevModPhys.35.916	journal	October 1963
Systematic uncertainties in the precise determination of the strangeness magnetic moment of the nucleon Leinweber, D. B.; Boinepalli, S.; Thomas, A. W. The European Physical Journal A, Vol. 24, Issue S2 https://doi.org/10.1140/epjad/s2005-04-017-y	journal	February 2005
Note on Unitary Symmetry in Strong Interactions Okubo, Susumu Progress of Theoretical Physics, Vol. 27, Issue 5 https://doi.org/10.1143/PTP.27.949	journal	May 1962

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Octet baryon electromagnetic form factor double ratios ( G E * / G M * ) / ( G E / G M ) in a nuclear medium Ramalho, G.; de Melo, J. P. B. C.; Tsushima, K. Physical Review D, Vol. 100, Issue 1 https://doi.org/10.1103/physrevd.100.014030	journal	July 2019
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Shape of the Δ baryon in a covariant spectator quark model Ramalho, G.; Peña, M. T.; Stadler, A. Physical Review D, Vol. 86, Issue 9 https://doi.org/10.1103/physrevd.86.093022	journal	November 2012
Analytic parametrizations of the γ * N → N ( 1440 ) form factors inspired by light-front holography Ramalho, G. Physical Review D, Vol. 96, Issue 5 https://doi.org/10.1103/physrevd.96.054021	journal	September 2017
Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction Aznauryan, I. G.; Bashir, A.; Braun, V. M. International Journal of Modern Physics E, Vol. 22, Issue 06 https://doi.org/10.1142/s0218301313300154	journal	June 2013

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Title: Using baryon octet magnetic moments and masses to fix the pion cloud contribution

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