Near-threshold π- photoproduction on the deuteron

B. Strandberg, K.G. Fissum*, J.R.M. Annand, W.J. Briscoe, J. Brudvik, F. Cividini, L. Clark, E.J. Downie, K. England, G. Feldman, D.I. Glazier, K. Hamilton, K. Hansen, L. Isaksson, R. Al Jebali, M.A. Kovash, A.E. Kudryavtsev, V. Lensky, S. Lipschutz, M. LundinM. Meshkian, D. G. Middleton, L. S. Myers, D. O'Donnell, G. V. O'Rielly, B. Oussena, M. F. Preston, B. Schröder, B. Seitz, I. I. Strakovsky, M. Taragin, V. E. Tarasov

*Corresponding author for this work

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Abstract

The first experimental investigation of the near-threshold cross section for incoherent π- photoproduction on the ϒd → π-pp is presented. The experimental technique involved detection of the ≈ 131 MeV ϒ ray resulting from the radiative capture of photoproduced π- in the target. The total cross section has been measured using an unpolarized tagged-photon beam, a liquid-deuterium target, and three very large NaI(Tl) spectrometers. The data are compared to theoretical models that give insight into the elementary reaction ϒn → π-p and pion-nucleon and nucleon-nucleon final-state interactions.
Original languageEnglish
Article number035207
Number of pages7
JournalPhysical Review C
Volume101
Issue number3
DOIs
Publication statusPublished - 16 Mar 2020

Keywords

  • nucl-ex

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