期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
Role of t-channel meson exchanges in S-wave πN and KN scatterings
1
作者 吴锋泉 张印杰 邹冰松 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第8期629-633,共5页
The low-energy S-wave πN and KN scatterings are studied by using the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially ρ and σ exchanges, are found to play a very impo... The low-energy S-wave πN and KN scatterings are studied by using the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially ρ and σ exchanges, are found to play a very important role in these two processes. The t-channel p exchange determines the isospin structure of the scattering amplitudes, it gives attractive force in the low isospin state but repulsive force in the high isospin state. The t-channel σ exchange gives a very large contribution in these two processes, while it is negligible in meson-meson S-wave scatterings. 展开更多
关键词 meson exchange K-MATRIX πK KN
原文传递
Study of the heavy molecular states in the quark model with meson exchange interaction
2
作者 余思海 王保凯 +1 位作者 陈晓林 邓卫真 《Chinese Physics C》 SCIE CAS CSCD 2012年第1期25-30,共6页
Some charmonium-like resonances such as X(3872) can be interpreted as possible D (*) (*) molecular states.Within the quark model,we study the structure of such molecular states and the similar B (*) (*... Some charmonium-like resonances such as X(3872) can be interpreted as possible D (*) (*) molecular states.Within the quark model,we study the structure of such molecular states and the similar B (*) (*) molecular states by taking into account the light meson exchange (π,η,ρ,ω and σ) between two light quarks from different mesons. 展开更多
关键词 molecular state quark model meson exchange
原文传递
Resonance properties from a coupled channel meson exchange model
3
作者 M. Dring C. Hanhart +2 位作者 黄飞 S. Krewald U.-G. Meiβner 《Chinese Physics C》 SCIE CAS CSCD 2009年第12期1273-1278,共6页
In this talk, I present the results on the pole structure of pion-nucleon scattering in an analytic model based on meson exchange. The analytic properties of scattering amplitudes provide important information. Beside... In this talk, I present the results on the pole structure of pion-nucleon scattering in an analytic model based on meson exchange. The analytic properties of scattering amplitudes provide important information. Besides the cuts, the poles and zeros on the different Riemann sheets determine the global behavior of the amplitude on the physical axis. Pole positions and residues allow for a parameterization of resonances in a well-defined way, free of assumptions for the background and energy dependence of the resonance part. This is a necessary condition to relate resonance contributions in different reactions. 展开更多
关键词 pion-nucleon scattering meson exchange model analytic structure of the scattering amplitude
原文传递
Exploring High Strangeness Dibaryons with the Extended Quark Delocalization andColor Screening Model 被引量:4
4
作者 PANGHou-Rong PINGJia-Lun +1 位作者 WANGFan ZHAOEn-Guang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第1期67-72,共6页
Promising high strangeness dibaryons are studied by the extended quark delocalization and color screeningmodel. It is shown that besides H particle and di-Ω, there might be other dibaryon candidates worth to be searc... Promising high strangeness dibaryons are studied by the extended quark delocalization and color screeningmodel. It is shown that besides H particle and di-Ω, there might be other dibaryon candidates worth to be searchedexperimentally such as NΩ. 展开更多
关键词 DIBARYON meson exchange
下载PDF
Nuclear magnetic moments in covariant density functional theory 被引量:1
5
作者 Jian Li J.Meng 《Frontiers of physics》 SCIE CSCD 2018年第6期115-132,共18页
Nuclear magnetic moment is an important physical variable and serves as a useful tool for the stringent test of nuclear models. For the past decades, the covariant density functional theory and its extension have been... Nuclear magnetic moment is an important physical variable and serves as a useful tool for the stringent test of nuclear models. For the past decades, the covariant density functional theory and its extension have been proved to be successful in describing the nuclear ground-states and excited states properties. However, a long-standing problem is its failure to predict magnetic moments. This article reviews the recent progress in the description of the nuclear magnetic moments within the covariant density functional theory. In particular, the magnetic moments of spherical odd-A nuclei with doubly closed shell core plus or minus one nucleon and deformed odd-A nuclei. 展开更多
关键词 nuclear magnetic moment covariant density functional theory meson exchange current configuration mixing
原文传递
Strategies for baryon resonance analysis
6
作者 M. Dring C. Hanhart +2 位作者 黄飞 S. Krewald U.-G. Meiβner 《Chinese Physics C》 SCIE CAS CSCD 2009年第12期1127-1131,共5页
The analytic properties theoretical investigations of baryon of scattering amplitudes provide a meeting point for experimental and resonances. Pole positions and residues allow for a parameterization of resonances in ... The analytic properties theoretical investigations of baryon of scattering amplitudes provide a meeting point for experimental and resonances. Pole positions and residues allow for a parameterization of resonances in a well-defined way which relates different reactions. The recent progress made within the Jiilich model is summarized. 展开更多
关键词 pion-nucleon scattering meson exchange model analytic structure of the scattering amplitude
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部