Angular dependence of recoil proton polarization in high-energy γ d to p n

X. Jiang , J. Arrington , F. Benmokhtar , A. Camsonne , J.P. Chen , S. Choi , E. Chudakov , F. Cusanno

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A. Deur D. Dutta F. Garibaldi D. Gaskell O. Gayou R. Gilman C. Glashauser D. Hamilton O. Hansen D.W. Higinbotham R.J. Holt C.W. de Jager M.K. Jones L.J. Kaufman E.R. Kinney K. Kramer L. Lagamba R. De Leo J. Lerose D. Lhuillier R. Lindgren N. Liyanage K. McCormick Z.-E. Meziani R. Michaels B. Moffit P. Monaghan S. Nanda K.D. Paschke C.F. Perdrisat V. Punjabi I.A. Qattan R.D. Ransome P.E. Reimer B. Reitz A. Saha E.C. Schulte R. Sheyor K. Slifer P. Solvignon V. Sulkosky G.M. Urciuoli E. Voutier K. Wang K. Wijesooriya B. Wojtsekhowski L. Zhu

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classification ⚛️ nucl-ex hep-exnucl-th

keywords polarizationangulardependenceprotonrecoilbenchmarkcalculationschromodynamics

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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.

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Angular dependence of recoil proton polarization in high-energy γ d to p n

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