We apply the ab initio no-core shell model/resonating group method (NCSM/RGM) approach to calculate the cross section of the 7Be(p,gamma)8B radiative capture. This reaction is important for understanding the solar neutrino flux. Starting from a selected similarity-transformed chiral nucleon-nucleon interaction that accurately describes two-nucleon data, we performed parameter-free many-body calculations that simultaneously predict both the normalization and the shape of the S-factor. We study the dependence on the number of 7Be eigenstates included in the coupled-channel equations and on the size of the harmonic oscillator basis used for the expansion of the eigenstates and of the localized parts of the integration kernels. Our S-factor result at zero energy is on the lower side of, but consistent with, the latest evaluation.
Study of radiative proton capture by the 7Be nucleus with the use of ab initio approaches
Dukhov Research Institute for Automatics（杜霍夫自动技术研究研究所）；Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University（莫斯科国立大学索博列金核物理研究所）；RUDN University（俄罗斯人民友谊大学）
Study of the nucleon radiative captures 8Li(n,gamma)9Li, 9Be(p,gamma)10B, 10Be(n,gamma)11Be, 10B(p,gamma)11C, and 16O(p,gamma)17F at thermal and astrophysical energies
我们研究了中子俘获反应8Li（n，γ）9 Li及其在原始核合成中的作用。n + 8Li -> 9 Li + γ反应具有重要的天体物理学意义，因为它包括宇宙原始核合成过程链和II型超新星热核反应的变体之一。
Radiative decays of phi-meson about nature of light scalar resonances
我们在规范不变性的基础上证明了在辐射衰变phi->gamma a0->gamma pi 0 eta和phi->gamma f0->gamma pi 0 pi 0中发现了精细阈值现象。这使得可以得出结论，在这些衰变中最轻的标量介子a0（980）和f0（980）的产生是由四夸克跃迁引起的，导致对衰变振幅的大NC展开的强烈限制。分析表明，这些约束为a0（980）和f0（980）介子的四夸克性质提供了新的证据.
