General analysis of polarization effects in coherent pseudoscalar photo- and electroproduction of mesons on the deuteron
| Autor: | G. I. Gakh, E. Tomasi-Gustafsson, A. G. Gakh |
|---|---|
| Přispěvatelé: | Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Rok vydání: | 2019 |
| Předmět: |
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
Meson Nuclear Theory Hadronic Physics and QCD structure function: spin Elliptical polarization Spin structure 01 natural sciences Pseudoscalar meson pseudoscalar meson: electroproduction 0103 physical sciences electron: beam numerical calculations Nuclear Experiment 010306 general physics photon: beam polarization: effect helicity: amplitude analysis Physics 010308 nuclear & particles physics Polarization (waves) Helicity coherence Pseudoscalar Amplitude pseudoscalar meson: photoproduction [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Quantum electrodynamics differential cross section deuteron: target exchange: one-photon |
| Zdroj: | Physical Review C Physical Review C, American Physical Society, 2019, 100 (2), pp.025202. ⟨10.1103/PhysRevC.100.025202⟩ Phys.Rev.C Phys.Rev.C, 2019, 100 (2), pp.025202. ⟨10.1103/PhysRevC.100.025202⟩ Physical Review |
| ISSN: | 2469-9993 2469-9985 |
| DOI: | 10.1103/physrevc.100.025202 |
| Popis: | International audience; General expressions for the unpolarized differential cross section and for various polarization observables in coherent pseudoscalar meson photo- and electroproduction on a deuteron target have been obtained in the one-photon-exchange approximation. The spin structure of the matrix element is explicitly derived in terms of structure functions. The correspondence with the helicity amplitudes is given. The polarization effects have been investigated for the case of a longitudinally polarized electron beam and a vector or tensor polarized deuteron target. The polarization (vector or tensor) of the scattered deuteron for the case of an unpolarized or a longitudinally polarized electron beam is also considered. In the case of the photoproduction reaction, we consider a linearly, circularly, or elliptically polarized photon beam. Numerical estimations have been done for the unpolarized differential cross section and for some polarization observables. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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