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of 749
pro vyhledávání: '"Petry, H"'
Autor:
Van Cauteren, T., Corthals, T., Janssen, S., Ryckebusch, J., Merten, D., Metsch, B., Petry, H. -R.
The relativistically covariant constituent quark model developed by the Bonn group is used to compute the EM form factors of strange baryons. We present form-factor results for the ground-state and some excited hyperons. The computed magnetic moments
Externí odkaz:
http://arxiv.org/abs/nucl-th/0407017
Autor:
Van Cauteren, T., Merten, D., Corthals, T., Janssen, S., Metsch, B., Petry, H. -R., Ryckebusch, J.
Publikováno v:
Eur.Phys.J. A20 (2004) 283-291
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 com
Externí odkaz:
http://arxiv.org/abs/nucl-th/0310058
Autor:
Metsch, B. C., Petry, H. R.
Publikováno v:
Acta Phys.Polon.B27:3307-3320,1996
We present the results of a covariant constituent quark model, based on the Bethe-Salpeter equation, where confinement is implemented by a string like linear potential explaining the Regge trajectories. An instanton induced quark force explains not o
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609308
Publikováno v:
Phys.Lett. B380 (1996) 431-436
We show that instanton effects may play a crucial role in the decay of scalar mesons into two pseudoscalars. Particularly the branching ratios of two meson decays of the $f_0(1500)$, which is considered as a glue-ball candidate, are then compatible w
Externí odkaz:
http://arxiv.org/abs/hep-ph/9601246
Publikováno v:
Phys.Lett.B361:160-166,1995
In a relativistic quark model with linear confinement and an instanton-induced interaction which solves the $\eta$-$\eta'$ puzzle, scalar mesons are found as almost pure SU(3) flavor states. This suggests a new interpretation of the scalar nonet: We
Externí odkaz:
http://arxiv.org/abs/hep-ph/9507449
Publikováno v:
J.Phys.G22:1151-1160,1996
We consider the existence of bound systems consisting of two quarks and two antiquarks ($q^2\bar q^2$) within the framework of a constituent quark model. The underlying quark dynamics is described by a linear confinement potential and an effective $q
Externí odkaz:
http://arxiv.org/abs/hep-ph/9505215
Publikováno v:
Phys.Rev.C52:2110-2119,1995
We present a covariant scheme to calculate mesonic transitions in the framework of the Salpeter equation for $q\bar{q}$-states. The full Bethe Salpeter amplitudes are reconstructed from equal time amplitudes which were obtained in a previous paper\ci
Externí odkaz:
http://arxiv.org/abs/nucl-th/9406035
Publikováno v:
Nucl.Phys.A578:418-440,1994
The spectra and electroweak decay properties of light mesons are analyzed within the framework of the instantaneous Bethe-Salpeter equation. The interaction kernel comprises alternative spin-structures for a parameterization of confinement and a resi
Externí odkaz:
http://arxiv.org/abs/nucl-th/9307027
Publikováno v:
Nucl.Phys. A578 (1994) 397-417
We investigate the structure of the instantaneous Bethe-Salpeter equation for \(q\bar{q}\)-bound states in the general case of unequal quark masses and develop a numerical scheme for the calculation of mass spectra and Bethe-Salpeter amplitudes. In o
Externí odkaz:
http://arxiv.org/abs/nucl-th/9307026
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