Low-energy neutron-deuteron reactions with N 3 LO chiral forces

Low-energy neutron-deuteron reactions with N 3 LO chiral forces
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具有 N 3 LO 手性力的低能中子-氘核反应

DOI：
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发表时间：
2014
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通讯作者：
D. Minossi
D. Minossi
中科院分区：
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文献类型：
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作者：
J. Golak;R. Skibiński;K. Topolnicki;H. Witała;E. Epelbaum;H. Krebs;H. Kamada;U. Meissner;V. Bernard;P. Maris;J. Vary;S. Binder;A. Calci;K. Hebeler;J. Langhammer;R. Roth;A. Nogga;S. Liebig;D. Minossi

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我们用在手性微扰理论框架中一致推导的核子-核子力和三核子力求解三核子 Faddeev 方程，并以手性展开中的次次次次先导顺序求解。在第一项研究中，我们仅包括部分波的三核子力的矩阵元素，总的两核子（三核子）角动量高达 3 (5/2)。研究了低能中子-氘核弹性散射和氘核裂解反应。重点放在对称空间星和中子-中子准自由散射解体构型中的弹性散射和横截面中的 Ay 难题，据报道，数据与理论之间存在巨大差异。
We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-to-leading order in the chiral expansion. In this first investigation we include only matrix elements of the three-nucleon force for partial waves with the total two-nucleon (three-nucleon) angular momenta up to 3 (5/2). Low-energy neutron-deuteron elastic scattering and deuteron breakup reaction are studied. Emphasis is put on Ay puzzle in elastic scattering and cross sections in symmetric-space-star and neutron-neutron quasi-free-scattering breakup configurations, for which large discrepancies between data and theory have been reported.