Search for three-nucleon force effects in analyzing powers for p-->d elastic scattering.
Search for three-nucleon force effects in analyzing powers for p-->d elastic scattering.
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在分析 p-->d 弹性散射的功率时寻找三核子力效应。
DOI：
10.1103/physrevlett.86.5862
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发表时间：
2001
影响因子：
8.6
通讯作者：
J. Witala
中科院分区：
文献类型：
--
作者：
K. Ermisch;van den Ad M Berg;R. Bieber;W. Glöckle;J. Golak;M. Hagemann;V. Hannen;M. Harakeh;D. Huu;N. Kalantar;M. Kiš;A. Micherdzilska;M. Shafiei;H. Wörtche;H. Kamada;J. Kurol;A. Nogga;R. Skibilski;J. Witala
在KVI下进行了一系列测量，以获得（2）H（p->，pd）反应的矢量分析功率A（y）作为能量为120，135，150和170 MeV的入射束能量的函数。对于所有这些测量，θ（c.m.）从30度到170度都已覆盖。这些调查的目的是观察可能的自旋相关的影响超出两个核子力。当与Faddeev计算的预测相比时，仅基于两个核子力，在所有能量和质心角在70度和130度之间观察到显着偏差。现在的三核子力的加入并没有改善对数据的描述，这表明对三核子系统的性质的理解仍然不够。
A series of measurements have been performed at KVI to obtain the vector analyzing power A(y) of the (2)H(p-->,pd) reaction as a function of incident beam energy at energies of 120, 135, 150, and 170 MeV. For all these measurements, a range of theta(c.m.) from 30 degrees to 170 degrees has been covered. The purpose of these investigations is to observe possible spin-dependent effects beyond two-nucleon forces. When compared to the predictions of Faddeev calculations, based on two-nucleon forces only, significant deviations are observed at all energies and at center-of-mass angles between 70 degrees and 130 degrees. The addition of present-day three-nucleon forces does not improve the description of the data, demonstrating the still insufficient understanding of the properties of three-nucleon systems.