نتایج جستجو برای: deuteron
تعداد نتایج: 2862 فیلتر نتایج به سال:
We calculate the deuteron anapole moment with the wave functions obtained from the Argonne v18 nucleon-nucleon interaction model. The anapole moment operators are considered at the leading order. To minimize the uncertainty due to a lack of current conservation, we calculate the matrix element of the anapole moment from the original definition. In virtue of accurate wave functions, we can obtai...
The deuteron electromagnetic form factors, A(Q 2) and B(Q 2), and the tensor polarization T 20 (Q 2), are unambiguously calculated within the front-form relativis-tic Hamiltonian dynamics, by using a novel current, built up from one-body terms, which fulfills Poincaré, parity and time reversal covariance, together with Hermiticity and the continuity equation. A simultaneous description of the e...
A modified version of the Faddeev three-body equation to accommodate the Coulomb interaction, which was used in the study of three-nucleon bound states, is applied to the proton-deuteron scattering problem at energies below the three-body breakup threshold. A formal derivation of the equation in a time-independent scattering theory is given. Numerical results for phase shift parameters are pres...
Three-body photodisintegration of 3 He is calculated in the photon energy range 200 – 400 MeV assuming quasifree absorption on np pairs both in initial quasideuteron and singlet configurations. The model includes the normal nucleonic current, explicit meson exchange currents and the ∆(1232)-isobar excitation. The total cross section is increased by a factor of about 1.5 compared with free deute...
Background: An isoscalar $pn$ pair is expected to emerge in nuclei that have similar proton and neutron numbers it may be a candidate for deuteron ``cluster.'' There is, however, no experimental evidence it.Purpose: The purpose of this paper construct new reaction model the $(p,pd)$ including breakup elementary process reformation by final-state interactions. How these processes contribute obse...
The tensor polarization is known to be the specific property of the particles with spin larger than 1 2 . The deuteron is one of the most fundamental spin-1 particles, and the effects of its tensor polarization are intensively studied at low and intermediate energies. Such effects should also be manifested for deep inelastic scattering (DIS) off deuteron target, resulting in the new structure f...
The pion-deuteron scattering length is computed to next-to-next-to-leading order in baryon chiral perturbation theory. A modified power-counting is then formulated which properly accounts for infrared enhancements engendered by the large size of the deuteron, as compared to the pion Compton wavelength. We use the precise experimental value of the real part of the pion-deuteron scattering length...
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