Abstract.
Predictions for the electromagnetic form factors of the \(\Lambda\), \(\Sigma\) and \(\Xi\) hyperons are presented. The numerical calculations are performed within the framework of the fully relativistic constituent-quark model developed by the Bonn group. The computed magnetic moments compare favorably with the experimentally known values. Most magnetic form factors G M (Q 2) can be parameterized in terms of a dipole with cutoff masses ranging from 0.79 to 1.14 GeV.
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References
M. Gell-Mann, Phys. Rev. 125, 1067 (1962).
M. Gell-Mann, Phys. Lett. 8, 214 (1964).
Y. Ne’eman, Nucl. Phys. 26, 222 (1961).
G. Zweig, CERN Reports 8182/TH, 401 (1964), unpublished internal report.
G. Zweig, CERN Reports 8419/TH, 412 (1964), unpublished internal report.
Q. Zhao, Phys. Rev. C 63, 025203 (2001).
Z. Li, B. Saghai, Nucl. Phys. A 644, 345 (1998).
Y. Oh, A.I. Titov, S.N. Yang, T. Morii, Phys. Lett. B 462, 23 (1999).
P. Kroll, M. Schürmann, K. Passek, W. Schweiger, Phys. Rev. D 55, 4315 (1997).
T. Sato, T.-S.H. Lee, Phys. Rev. C 54, 2660 (1996).
T. Yoshimoto, T. Sato, M. Arima, T.-S.H. Lee, Phys. Rev. C 61, 065203 (2000).
S. Janssen, J. Ryckebusch, W. Van Nespen, D. Debruyne, T. Van Cauteren, Eur. Phys. J. A 11, 105 (2000).
S. Janssen, J. Ryckebusch, D. Debruyne, T. Van Cauteren, Phys. Rev. C 65, 015201 (2002).
S. Janssen, J. Ryckebusch, D. Debruyne, T. Van Cauteren, Phys. Rev. C 66, 035202 (2002).
S. Janssen, J. Ryckebusch, T. Van Cauteren, Phys. Rev. C 67, R052201 (2003).
D.S. Carman et al. , Phys. Rev. Lett. 90, 131804 (2003).
R.G.T. Zegers et al. , Phys. Rev. Lett. 91, 092001 (2003).
K.-H. Glander et al. , Eur. Phys. J. A 19, 251 (2003) and private communication.
A. D’Angelo et al. , in NSTAR 2001, Proceedings of the Workshop on the Physics of Excited Nucleons, edited by D. Drechsel, L. Tiator, Vol. 347 (World Scientific, New Jersey, London, Singapore, Hong Kong, 2001).
R. Petronzio, S. Simula, G. Ricco, Phys. Rev. D 67, 094004 (2003).
U. Löring, K. Kretzschmar, B. Metsch, H.-R. Petry, Eur. Phys. J. A 10, 309 (2001).
U. Löring, B. Metsch, H.-R. Petry, Eur. Phys. J. A 10, 395 (2001).
U. Löring, B. Metsch, H.-R. Petry, Eur. Phys. J. A 10, 447 (2001).
D. Merten, Hadron form factors and decays, PhD Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, Germany (2002).
E.E. Salpeter, H.A. Bethe, Phys. Rev. 84, 1232 (1951).
M. Koll, R. Ricken, D. Merten, B.C. Metsch, H.-R. Petry, Eur. Phys. J. A 9, 73 (2000).
D. Merten, U. Löring, K. Kretzschmar, B. Metsch, H.-R. Petry, Eur. Phys. J. A 14, 477 (2002).
R.F. Wagenbrunn, S. Boffi, W. Klink, W. Plessas, M. Radici, Phys. Lett. B 511, 33 (2001).
M.I. Adamovich et al. , Eur. Phys. J. C 8, 59 (1999).
SELEX Collaboration (I. Eschrich et al. ), Phys. Lett. B 522, 233 (2001).
H.-Ch. Kim, A. Blotz, M.V. Polyakov, K. Goeke, Phys. Rev. D 53, 4013 (1996).
B. Kubis, T.R. Hemmert, U.-G. Meißner, Phys. Lett. B 456, 240 (1999).
B. Kubis, U.-G. Meißner, Eur. Phys. J. C 18, 747 (2001).
W. Plessas, Nuclear Dynamics: From Quarks to Nuclei, Proceedings of the XXth CFIF Fall Workshop, Lisbon, Portugal, edited by M.T. Pena, A. Stadtler, A.M. Eiro, J. Adam, Few-Body Syst. Suppl. 15, 139 (2003).
L.Ya. Glozman, W. Plessas, K. Varga, R.F. Wagenbrunn, Phys. Rev. D 58, 094030 (1998).
L.Ya. Glozman, Z. Papp, W. Plessas, K. Varga, R.F. Wagenbrunn, Phys. Rev. C 57, 3406 (1998).
R.K. Bhaduri, L.E. Cohler, Y. Nogami, Nuovo Cimento A 65, 376 (1981).
L. Theußl, R.F. Wagenbrunn, B. Desplanques, W. Plessas, Eur. Phys. J. A 12, 91 (2001).
J.J. Kelly, Phys. Rev. C 66, 065203 (2002).
K. Hagiwara et al. , Phys. Rev. D 66, 010001 (2002).
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Communicated by V. Vento
Received: 2 October 2003, Published online: 20 April 2004
PACS:
11.10.St Bound and unstable states; Bethe-Salpeter equations - 12.39.Ki Relativistic quark model - 13.40.Gp Electromagnetic form factors
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Van Cauteren, T., Merten, D., Corthals, T. et al. Electric and magnetic form factors of strange baryons. Eur. Phys. J. A 20, 283–291 (2004). https://doi.org/10.1140/epja/i2003-10158-3
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DOI: https://doi.org/10.1140/epja/i2003-10158-3