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Two Photon Exchange in Quasi-elastic and Deep-inelastic Scattering

Averett, Todd D. ; Katich, Joseph ; Zhao Bo

AIP conference proceedings, 2011, Vol.1374 (1) [Periódico revisado por pares]

United States

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Título:
Two Photon Exchange in Quasi-elastic and Deep-inelastic Scattering
Autor: Averett, Todd D. ; Katich, Joseph ; Zhao Bo
Assuntos: ACCELERATORS ; ANGULAR MOMENTUM ; ASYMMETRY ; BOSONS ; CEBAF ACCELERATOR ; CHARGED-PARTICLE REACTIONS ; DEEP INELASTIC SCATTERING ; DIMENSIONLESS NUMBERS ; DIRECT REACTIONS ; ELECTROMAGNETIC FORM FACTORS ; ELECTRON REACTIONS ; ELECTRONS ; ELEMENTARY PARTICLES ; EVEN-ODD NUCLEI ; FERMIONS ; FORM FACTORS ; FOUR MOMENTUM TRANSFER ; HELICITY ; HELIUM 3 ; HELIUM ISOTOPES ; INELASTIC SCATTERING ; INTERACTIONS ; ISOTOPES ; LEPTON REACTIONS ; LEPTON-BARYON INTERACTIONS ; LEPTON-HADRON INTERACTIONS ; LEPTON-NUCLEON INTERACTIONS ; LEPTONS ; LIGHT NUCLEI ; LINEAR ACCELERATORS ; MASSLESS PARTICLES ; MOMENTUM TRANSFER ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; NUCLEAR REACTIONS ; NUCLEI ; ORIENTATION ; PARTICLE INTERACTIONS ; PARTICLE PROPERTIES ; PHOTONS ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; POLARIZATION ; QUASI-ELASTIC SCATTERING ; QUASI-FREE REACTIONS ; SCATTERING ; SENSITIVITY ; SPIN ; SPIN ORIENTATION ; STABLE ISOTOPES
É parte de: AIP conference proceedings, 2011, Vol.1374 (1)
Descrição: In this paper, I present an overview and preliminary results from three experiments at Jefferson Lab that were recently completed using a {sup 3}He gas target with polarization oriented normal to the scattering plane of unpolarized incident electrons. A target single spin asymmetry was formed by periodically flipping the direction of the target spin. In the reaction {up_arrow}{sup 3}He(e,e'), the Born contribution is expected to be zero, giving direct sensitivity to two photon exchange. This asymmetry was measured in the quasi-elastic and deep-inelastic regimes with 0.1 < Q{sup 2} < 1.0 GeV{sup 2}. The asymmetry is predicted to decrease by two-orders of magnitude for deep-inelastic versus quasi-elastic scattering. Preliminary results from these experiments will be presented.
Editor: United States
Idioma: Inglês

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Two Photon Exchange in Quasi-elastic and Deep-inelastic Scattering

Averett, Todd D. ; Katich, Joseph ; Zhao Bo

United States

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