Soft two-meson-exchange nucleon-nucleon potentials. I. Planar and crossed-box diagrams.
Soft two-meson-exchange nucleon-nucleon potentials. I. Planar and crossed-box diagrams.
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软二介子交换核子-核子势。
DOI：
10.1103/physrevc.54.2851
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
V. Stoks
中科院分区：
文献类型：
--
作者：
T. Rijken;V. Stoks
导出了处于中间态的两个核子的π介子交换核子核子势。我们所包括的介子是：(I)伪标量介子{pi}，{eta}和{eta}{sup{Prime}}，(Ii)矢量介子{rho}，{omega}和{phi}，(Iii)标量介子{itala}{sub0}(980)，{var_epsilon}(760)和{italf}{sub0}(975)，以及(Iv)来自波美隆的{italJ}=0贡献。假设有强的动力学对抑制，在核子-核子-介子的顶点处，利用介子和介子交换振幅的色散表示，在相对论二体框架中引入了高斯形状因子。使用能量分母的因式分解技术来执行傅里叶变换。首先在所有平面和交叉三维动量空间{pi}介子图的绝热近似下计算势能。接下来，我们计算1/{ital M}个校正值。{版权所有}{1996年美国物理学会。}
Pion-meson-exchange nucleon-nucleon potentials are derived for two nucleons in the intermediate states. The mesons we include are (i) pseudoscalar mesons {pi},{eta}, and {eta}{sup {prime}}, (ii) vector mesons {rho}, {omega}, and {phi}, (iii) scalar mesons {ital a}{sub 0}(980), {var_epsilon}(760), and {ital f}{sub 0}(975), and (iv) the {ital J}=0 contribution from the Pomeron. Strong dynamical pair suppression is assumed, and at the nucleon-nucleon-meson vertices Gaussian form factors are incorporated into the relativistic two-body framework using a dispersion representation for the pion- and meson-exchange amplitudes. The Fourier transformations are performed using factorization techniques for the energy denominators. The potentials are first calculated in the adiabatic approximation to all planar and crossed three-dimensional momentum-space {pi}-meson diagrams. Next, we calculate the 1/{ital M} corrections. {copyright} {ital 1996 The American Physical Society.}