ﻻ يوجد ملخص باللغة العربية
From the recent measurement of parity nonconservation (PNC) in the Cs atom we have extracted the constant of the nuclear spin dependent electron-nucleon PNC interaction, $kappa = 0.442 (63)$; the anapole moment constant, $kappa_a = 0.364 (62)$; the strength of the PNC proton-nucleus potential, $g_p = 7.3 pm 1.2 (exp.) pm 1.5 (theor.)$; the $pi$-meson-nucleon interaction constant, $f_pi equiv h_pi^{1} = [9.5 pm 2.1 (exp.) pm 3.5 (theor.)] times 10^{-7}$; and the strength of the neutron-nucleus potential, $g_n = -1.7 pm 0.8 (exp.) pm 1.3 (theor.)$.
We determine the third Zemach moment of hydrogen (<r^3>_(2)) using only the world data on elastic electron-proton scattering. This moment dominates the O (Z alpha)^5 hadronic correction to the Lamb shift in muonic atoms. The resulting moment, <r^3 >_
Quark-model nucleon-nucleon and hyperon-nucleon interactions by the Kyoto- Niigata group are applied to the hypertriton calculation in a new three-cluster Faddeev formalism using the two-cluster resonating-group method kernels. The most recent model,
We upgrade a SU_6 quark-model description for the nucleon-nucleon and hyperon-nucleon interactions by improving the effective meson-exchange potentials acting between quarks. For the scalar- and vector-meson exchanges, the momentum-dependent higher-o
Employing the covariant baryon chiral perturbation theory, we calculate the leading and next-to-leading order two-pion exchange (TPE) contributions to $NN$ interaction up to order $O(p^3)$. We compare the so-obtained $NN$ phase shifts with $2leq Lleq
A discussion is presented of the dynamics underlying three-body nuclear forces, with emphasis on changes which occurred over several decades.