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First Measurements of the Double-Polarization Observables F, P, and H in ω Photoproduction off Transversely Polarized Protons in the N∗ Resonance Region
- Source :
- Phys.Rev.Lett., Phys.Rev.Lett., 2019, 122 (16), pp.162301. ⟨10.1103/PhysRevLett.122.162301⟩
- Publication Year :
- 2019
-
Abstract
- First measurements of double-polarization observables in $\omega$ photoproduction off the proton are presented using transverse target polarization and data from the CEBAF Large Acceptance Spectrometer (CLAS) FROST experiment at Jefferson Lab. The beam-target asymmetry $F$ has been measured using circularly polarized, tagged photons in the energy range 1200 - 2700 MeV, and the beam-target asymmetries $H$ and $P$ have been measured using linearly polarized tagged photons in the energy range 1200 - 2000 MeV. These measurements significantly increase the database on polarization observables. The results are included in two partial-wave analyses and reveal significant contributions from several nucleon ($N^\ast$) resonances. In particular, contributions from new $N^\ast$ resonances listed in the Review of Particle Properties are observed, which aid in reaching the goal of mapping out the nucleon resonance spectrum.<br />Comment: Two authors added, figures updated
- Subjects :
- Nuclear Theory
partial wave
Socio-culturale
nucleon resonance
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
High Energy Physics - Experiment
Photonuclear reactions, Color confinement, Polarization phenomena, QCD in nuclear reactions, Resonance reactions
CLAS
Resonance reactions
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Nuclear Experiment
Nuclear Physics
Settore FIS/04
Polarization phenomena
photon
nucleon
Photonuclear reactions
Color confinement
Automatic Keywords
transverse
QCD in nuclear reactions
polarization: target
Physics::Accelerator Physics
data management
asymmetry
experimental results
Jefferson Lab
photoproduction
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Database :
- OpenAIRE
- Journal :
- Phys.Rev.Lett., Phys.Rev.Lett., 2019, 122 (16), pp.162301. ⟨10.1103/PhysRevLett.122.162301⟩
- Accession number :
- edsair.pmid.dedup....2952a6090cfc96db6391c79404eee6da