Zobrazeno 1 - 10
of 342
pro vyhledávání: '"Plessas, W."'
We have performed an evaluation of the individual up- and down-flavor contributions to the nucleon electromagnetic form factors within a relativistic constituent-quark model. It is found that the theoretical parameter-free predictions agree surprisin
Externí odkaz:
http://arxiv.org/abs/1110.3665
Autor:
Plessas, W.
Publikováno v:
PoS LC2010:017,2010
We present a review of the description of hadron properties along an invariant mass operator in the point form of Poincar\'e-invariant relativistic dynamics. The quark-quark interaction is furnished by a linear confinement, consistent with the QCD st
Externí odkaz:
http://arxiv.org/abs/1011.0156
Publikováno v:
Phys.Rev.D82:014007,2010
We present a study of axial charges of baryon ground and resonant states with relativistic constituent quark models. In particular, the axial charges of octet and decuplet $N$, $\Sigma$, $\Xi$, $\Delta$, $\Sigma^*$, and $\Xi^*$ baryons are considered
Externí odkaz:
http://arxiv.org/abs/1005.0337
Publikováno v:
Few Body Syst.47:225-236,2010
A method is presented that allows to solve the Faddeev integral equations of the semirelativistic constituent quark model. In such a model the quark-quark interaction is modeled by a infinitely rising confining potential and the kinetic energy is tak
Externí odkaz:
http://arxiv.org/abs/1001.4062
Publikováno v:
Phys.Rev.C81:028201,2010
The axial charges of the nucleon and the well-established N* resonances are studied within a consistent framework. For the first time the axial charges of the N* resonances are produced for the relativistic constituent quark model. The axial charge o
Externí odkaz:
http://arxiv.org/abs/0908.3959
Autor:
Plessas, W., Melde, T.
Publikováno v:
AIP Conf.Proc.1056:15-22,2008
Latest results from a study of baryon ground and resonant states within relativistic constituent quark models are reported. After recalling some typical spectral properties, the description of ground states, especially with regard to the nucleon and
Externí odkaz:
http://arxiv.org/abs/0811.1752