论文标题
手性三核电接触术语的重要性，以了解弹性核子 - 脱氧于
Significance of chiral three-nucleon force contact terms for understanding of elastic nucleon-deuteron scattering
论文作者
论文摘要
我们通过应用n $^4 $^4 $^4 $^4 $^4 $^4 $^4 $^4 $^+$手性半位置动量空间（SMS）正则核酸核核（NN）的呼叫潜力来调查弹性核子 - deuteron（nd）散射中三核（3N）力接触项的重要性。接触项的强度参数是通过将理论预测拟合以横截面和分析撞击核子的三个能量的幂数据来获得的。尽管n $^3 $ lo对3N力的贡献被完全忽略了，但以接触项乘以拟合强度参数计算的结果可以改善对弹性ND散射可观察到的弹性散射，以较广泛的传入的核子能量低于铅生产阈值。
We investigate the importance of the three-nucleon (3N) force contact terms in elastic nucleon-deuteron (Nd) scattering by applying the N$^4$LO$^+$ chiral semi-local momentum space (SMS) regularized nucleon-nucleon (NN) chiral potential supplemented by N$^2$LO and all subleading N$^4$LO three-nucleon force (3NF) contact terms. Strength parameters of the contact terms were obtained by least squares fitting of theoretical predictions to cross section and analyzing powers data at three energies of the impinging nucleon. Although the N$^3$LO contributions to the 3N force were completely neglected, the results calculated with the contact terms multiplied by the fitted strength parameters yield an improved description of the elastic Nd scattering observables in a wide range of incoming nucleon energies below the pion production threshold.
