X17玻色子与d(p,e+ e-)3He和d(n,e+ e-)3H过程：理论分析
The X17 boson and the d(p,e+ e-)3He and d(n,e+ e-)3H processes: a theoretical analysis
AI总结：
本研究分析d(p,e+e-)3He和d(n,e+e-)3H过程中的e+e-对产生，通过考察18-30 MeV入射束流能量下纯电磁过程及假设X17玻色子（标量等类型）交换的影响，利用3He和3H镜像结构探究X17-核子相互作用的同位旋依赖性。
摘要：
本工作研究d(p,e+e-)3He和d(n,e+e-)3H过程中的e+e-对产生，旨在揭示假设的低质量玻色子（即X17）交换可能产生的效应。为使入射束流能量足以产生质量约17 MeV的X17玻色子，我们研究入射束流能量在18-30 MeV范围的过程。首先，在基于手征有效场论chiEFT的核强相互作用动力学和核电磁流最新方法框架下，将其作为纯电磁过程分析；接着考察假设低质量玻色子交换对这些过程截面的影响，考虑该玻色子为标量、赝标量、矢量或轴矢量等多种可能性。本研究主要目的是利用3He和3H核的镜像结构，探究X17-核子相互作用的同位旋依赖性（即所谓的“原初恐惧性”）。
英文摘要：
The present work deals with the e+ e- pair production in the d(p,e+e-)3He and d(n,e+ e-)3H processes, in order to evidentiate possible effects due to the exchange of a hypothetical low-mass boson, the so-called X17. These processes are studied for energies of the incident beams in the range 18-30 MeV, in order to have a sufficient energy to produce such a boson, whose mass is estimated to be around 17 MeV. We first analyze them as a purely electromagnetic processes, in the context of a state-of-the-art approach to nuclear strong-interaction dynamics and nuclear electromagnetic currents, derived from chiral effective field theory chiEFT. Next, we examine how the exchange of a hypothetical low-mass boson would impact the cross sections for such processes. We consider several possibilities, that this boson is either a scalar, pseudoscalar, vector, or axial particle. The main aim of the study is to exploit the specular structure of the 3He and 3H nuclei to investigate the isospin dependency of the X17-nucleon interaction, as the alleged "proto-phobicity".
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