Cross sections and tensor analyzing powers Ayy of the reaction 1H(→d,pp)n in “symmetric constant relative energy” geometries at Ed=19 MeV
Cross sections and tensor analyzing powers Ayy of the reaction 1H(→d,pp)n in “symmetric constant relative energy” geometries at Ed=19 MeV
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Ed=19 MeV 时“对称常数相对能量”几何结构中反应 1H(→d,pp)n 的横截面和张量分析功效 Ayy
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
P. Sauer
中科院分区：
文献类型：
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作者：
J. Ley;C. Dueweke;R. Emmerich;A. Imig;H. P. Schieck;J. Golak;H. Witała;E. Epelbaum;A. Deltuva;A. Fonseca;W. Glöckle;U. Meissner;A. Nogga;P. Sauer
测量了能量为19 MeV的四种对称的恒定相对能量（SCRE）组态下{sup 1}H（d-矢量，pp）n分裂反应的截面和张量分析本领.的数据进行了比较，从四种不同的方法的理论预测：第一个基于高精度（半）唯象势单独或，第二，结合模型三核子力，和第三手征力的基础上，下一个到下一个主导顺序（NNLO）的手征展开。在这些情况下，库仑相互作用不包括在内。此外，第四种方法包括在与基于CD波恩，包括{δ}激励和库仑力的预测的比较。在所有情况下，测量的横截面显着低于理论值，而张量分析功率的大小同意在误差条内的四种情况下的三个。分裂截面的明显差异与已知的空间恒星分裂的差异相似。这增加了未解决的低能量差异（谜题）的数据库
We measured the cross sections and tensor analyzing powers of the {sup 1}H(d-vector,pp)n breakup reaction at E{sub d}=19 MeV in four symmetric constant relative energy (SCRE) configurations. The data are compared with theoretical predictions from four different approaches: the first based on high-precision (semi)phenomenological potentials alone or, the second, combined with model three-nucleon forces, and the third based on chiral forces up to next-to-next-to-leading order (NNLO) in the chiral expansion. In these cases the Coulomb interaction is not included. In addition, a fourth approach consists in a comparison with predictions based on CD Bonn including the {delta} excitation and the Coulomb force. In all cases the measured cross sections are significantly below the theoretical values, whereas the magnitudes of the tensor analyzing powers agree within the error bars in three of the four cases. The apparent discrepancies in the breakup cross sections are similar to the known differences for the space-star breakup. This adds to the data base of unsolved low-energy discrepancies (puzzles)