Электронный каталог

Статья

Galynskii, M.V.
Polarization Effects in the Elastic e⃗p *> ⃗ep and ⃗e⃗p *> ep Processes in the Case of Parallel Spins / M.V.Galynskii, V.V.Bytev, V.M.Galynsky // Physical Review D [Electronic resource]. – 2024. – Vol. 110, No. 9. – P. 096017. – URL: https://doi.org/10.1103/PhysRevD.110.096017. – Bibliogr.: 59.

In the one-photon exchange approximation, we analyze polarization effects in the elastic ⃗e⃗p→ ep and e⃗p → ⃗ep processes in the case when the spin quantization axes of a target proton at rest and an incident orscattered electron are parallel. To do this, in the kinematics of the SANE Collaboration experiment [A. Liyanage et al., Phys. Rev. C 101, 035206 (2020)] using the J. Kelly [Phys. Rev. C 70, 068202 (2004)] and I. Qattan et al. [Phys. Rev. C 91, 065203 (2015)] parametrizations for the Sachs form-factor ratio R ≡ μ&sub(p)G&sub(E)=G&sub(M), a numerical analysis was carried out of the dependence of the longitudinal polarization degree transferred to the scattered electron in the e⃗p → ⃗ep process and double-spin asymmetry in the ⃗e⃗p→ ep process on the square of the momentum transferred to the proton, as well as on the scattering angle of the electron. It is established that the difference in the longitudinal polarization degree of the scattered electron in the e⃗p → ⃗ep process in the cases of conservation and violation of the scaling of the Sachs form factors can reach 70%. This fact can be used to set up polarization experiments of a new type to measure the ratio R. For double-spin asymmetry in the ⃗e⃗p → ep process, the corresponding difference does not exceed 2.32%. This fact means that it is not sensitive to the effects of the Sachs form-factor scaling violation and could be used as a test for the R ≈ 1 equality.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 343 б - Взаимодействие гамма-квантов и электронов с ядрами. *g*g-реакции
Спец.(статьи,препринты) = С 332.5 - Взаимодействие электронов и позитронов с нуклонами, гамма-квантов с нуклонами и пионами
Бюллетени = 1/025