Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Kamalov, S. S."'
Recent progress on the extraction of electromagnetic properties of nucleon resonance excitation through pion photo- and electroproduction is reviewed. Cross section data measured at MAMI, ELSA, and CEBAF are analyzed and compared to the analysis of o
Externí odkaz:
http://arxiv.org/abs/1109.6745
Publikováno v:
AIP Conf. Proc. 1432, 293-296 (2012)
We present the results on P11 resonances obtained with Dubna-Mainz-Taipei (DMT) dynamical model for pion-nucleon scattering and pion electromagnetic production. The extracted values agree well, in general, with PDG values. One pole is found correspon
Externí odkaz:
http://arxiv.org/abs/1108.1673
Publikováno v:
Phys.Rev.C82:055203,2010
Within the previously developed Dubna-Mainz-Taipei meson-exchange model, the singularity structure of the pi N scattering amplitudes has been investigated. For all partial waves up to F waves and c.m. energies up to W = 2 GeV, the T-matrix poles have
Externí odkaz:
http://arxiv.org/abs/1007.2126
The unitary isobar model MAID2007 has been used to analyze the recent data of pion electroproduction. The model contains all four-star resonances in the region below W=2 GeV and both single-Q^2 and Q^2 dependent transition form factors could be obtai
Externí odkaz:
http://arxiv.org/abs/0909.2335
Publikováno v:
Eur.Phys.J.A34:69-97,2007
The unitary isobar model MAID2007 has been developed to analyze the world data of pion photo- and electroproduction. The model contains both a common background and several resonance terms. The background is unitarized according to the K-matrix presc
Externí odkaz:
http://arxiv.org/abs/0710.0306
Publikováno v:
Phys.Rev.C76:035206,2007
A meson-exchange model for pion-nucleon scattering was previously constructed using a three-dimensional reduction scheme of the Bethe-Salpeter equation for a model Lagrangian involving \pi, \eta, N, \Delta, \rho, and \sigma fields. We thereby extend
Externí odkaz:
http://arxiv.org/abs/nucl-th/0703096
Publikováno v:
Nucl.Phys.A790:229-234,2007
A meson-exchange piN model, previously constructed using three-dimensional reduction scheme of the Bethe-Salpeter equation for a model Lagrangian involving \pi, \eta, N, \Delta, rho, and \sigma fields, is extended to energies up to 2 GeV by including
Externí odkaz:
http://arxiv.org/abs/nucl-th/0610076
Autor:
Yang, S. N., Kamalov, S. S.
Publikováno v:
Int.J.Mod.Phys. A21 (2006) 873-876
The Dubna-Mainz-Taipei (DMT) dynamical model for pion electromagnetic production, which describe well the existing data from threshold up to 1 GeV photon lab energy is presented and used to analyze recent data in the $\Delta$ region . We find that wi
Externí odkaz:
http://arxiv.org/abs/hep-ph/0509318
Publikováno v:
Nucl.Phys. A737 (2004) 248-252
We show that, within a meson-exchange dynamical model describing well most of the existing pion electromagnetic production data up to the second resonance region, one is also able to obtain a good agreement with the pi^0 photo- and electroproduction
Externí odkaz:
http://arxiv.org/abs/nucl-th/0312117
Autor:
Yang, Shin Nan, Kamalov, S. S.
Publikováno v:
Mod.Phys.Lett. A18 (2003) 248-257
The Dubna-Mainz-Taipei dynamical model for pion electromagnetic production, which can describe well the existing data from threshold up to 1 GeV photon lab energy, is presented and used to analyze the recent precision data in the $\Delta$ region. We
Externí odkaz:
http://arxiv.org/abs/nucl-th/0303064