重离子双电荷交换反应的形式理论

H. Lenske, J. Bellone, M. Colonna, Danilo Gambacurta, José-Antonio Lay
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引用次数: 1

摘要

重述了重离子双电荷交换(DCE)反应 A(Z, N) → A(Z ± 2, N ∓ 2) 的理论,强调了双单电荷交换(DSCE)和先锋-核子马约拉纳 DCE(MDCE)反应的作用。双单电荷交换反应具有二阶扭曲波特性,由等矢量核子-核子(NN)相互作用介导。DSCE 反应函数类似于 2ν2β 衰变的核矩阵元素(NME)。MDCE 过程是通过动态生成的有效秩-2 等张量相互作用进行的,由壳外先驱-核子 DCE 散射定义。在闭合近似中得到了先驱势和双核相关性,类似于 0ν2β 马约拉纳双贝塔衰变(MDBD)中的中微子势和马约拉纳中微子的核内交换。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Formal theory of heavy ion double charge exchange reactions
The theory of heavy ion double charge exchange (DCE) reactions A(Z, N) → A(Z ± 2, N ∓ 2) is recapitulated emphasizing the role of Double Single Charge Exchange (DSCE) and pion-nucleon Majorana DCE (MDCE) reactions. DSCE reactions are of second–order distorted wave character, mediated by isovector nucleon-nucleon (NN) interactions. The DSCE response functions resemble the nuclear matrix elements (NME) of 2ν2β decay. The MDCE process proceeds by a dynamically generated effective rank-2 isotensor interaction, defined by off–shell pion–nucleon DCE scattering. In closure approximation pion potentials and two–nucleon correlations are obtained, similar to the neutrino potentials and the intranuclear exchange of Majorana neutrinos in 0ν2β Majorana double beta decay (MDBD).
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