Physics Letters B (2019-02-01)

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,
  • 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. Günther,
  • D. Gurevich,
  • L. Heijkenskjöld,
  • D. Hornidge,
  • G.M. Huber,
  • A. Käser,
  • 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. Werthmüller,
  • J. Wettig,
  • M. Wolfes,
  • L.A. Zana

Journal volume & issue
Vol. 789
pp. 7 – 12

Abstract

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We report the first large-acceptance measurement of the beam–spin asymmetry for deuteron photodisintegration (γ→d→pn) in the photon energy range 420<Eγ<620MeV. The measurement provides important new constraints on the mechanisms of photodisintegration above the Δ resonance and on the photocoupling of the recently discovered d⁎(2380) hexaquark. Keywords: Hexaquarks, Dibaryon, Deuteron photodisintegration