Angular dependence of recoil proton polarization in high-energy γd \to p n

Abstract

We measured the angular dependence of the three recoil proton polarization components in two-body photodisintegration of the deuteron at a photon energy of 2 GeV. These new data provide a benchmark for calculations based on quantum chromodynamics. Two of the five existing models have made predictions of polarization observables. Both explain the longitudinal polarization transfer satisfactorily.. Transverse polarizations are not well described, but suggest isovector dominance.

arXiv comment5 pages, 1 figure, submitted to Physical Review Letters

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Cited by in corpus (9)

• Transition between nuclear and quark-gluon descriptions of hadrons and light nuclei
• Hard Photodisintegration of a Proton Pair
• Ejectile Polarization for ${}^{2}H(e,e^{\prime }\vec{p})n$ at GeV energies
• Hard Break-Up of Two-Nucleons from the 3He Nucleus
• Polarization Observables in Deuteron Photodisintegration below 360 MeV
• Determination of the Beam-Spin Asymmetry of Deuteron Photodisintegration in the Energy Region $E_{\gamma }=1.1-2.3$ GeV
• Hard breakup of the deuteron into two Delta-isobars
• Hard Photodisintegration of 3He into pd pair
• Reduced nuclear helicity amplitudes for deuteron electrodisintegration and other processes