Deuteron photodisintegration by polarized photons in the region of the d^*(2380)

M. Bashkanov , S. Kay , D.P. Watts , C. Mullen , S. Abt , P. Achenbach , P. Adlarson , F. Afzal

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Z. Ahmed C.S. Akondi J.R.M. Annand H.J. Arends R. Beck M. Biroth N. Borisov A. Braghieri W.J. Briscoe F. Cividini C. Collicott S. Costanza A. Denig E.J. Downie P. Drexler S. Garni D.I. Glazier I. Gorodnov W. Gradl M. G\"unther D. Gurevich L. Heijkenskj\"old D. Hornidge G.M. Huber A. K\"aser V.L. Kashevarov M. Korolija B. Krusche A. Lazarev K. Livingston S. Lutterer I.J.D. MacGregor R. MacRae D.M. Manley P.P. Martel R. Miskimen E. Mornacchi A. Neganov A. Neiser M. Ostrick P.B. Otte D. Paudyal P. Pedroni A. Powell S.N. Prakhov G. Ron T. Rostomyan A. Sarty C. Sfienti V. Sokhoyan K. Spieker O. Steffen I.I. Strakovsky T. Strub I. Supek A. Thiel M. Thiel A. Thomas Yu.A. Usov S. Wagner N.K. Walford D. Werthm\"uller J. Wettig M. Wolfes L.A. Zana

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classification ⚛️ nucl-ex

keywords photodisintegrationdeuterongammameasurementaboveasymmetrybeam-spinconstraints

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We report the first large-acceptance measurement of the beam-spin asymmetry for deuteron photodisintegration ($\vec{\gamma} d\to pn$) in the photon energy range $400<E_{\gamma}<630$~MeV. The measurement provides important new constraints on the mechanisms of photodisintegration above the delta resonance and on the photocoupling of the recently discovered $d^*(2380)$ hexaquark.

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Deuteron photodisintegration by polarized photons in the region of the d^*(2380)

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