标题： 从头计算的7Be(p, gamma)8B辐射俘获多体计算 显示英文标题

标题： Ab initio many-body calculation of the 7Be(p,gamma)8B radiative capture

摘要： 我们应用从头计算无核心壳模型/共振组方法（NCSM/RGM）方法来计算7Be(p,γ)8B辐射俘获的截面。 此反应对于理解太阳中微子通量非常重要。 从一个选定的相似性变换的规范核子-核子相互作用出发，该相互作用准确描述了两核子数据，我们进行了无需参数的多体计算，同时预测了S因子的归一化和形状。 我们研究了在耦合通道方程中包含的7Be本征态数量以及用于本征态和积分核局部部分展开的谐振子基组的大小对结果的影响。 我们在零能下的S因子结果处于最新评估的较低一侧，但与之一致。 显示英文摘要

摘要： 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.