Measurement of the 1H(γ→, p⃗)π0 Reaction Using a Novel Nucleon Spin Polarimeter

A2 Collaboration MAMI, M. H. Sikora*, D. P. Watts, D. I. Glazier, P. Aguar-Bartolome, L. K. Akasoy, J. R. M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. S. Bekrenev, H. Berghaeuser, A. Braghieri, D. Branford, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F. B. Codling, B. T. Demissie, E. J. DownieP. Drexler, L. V. Fil'kov, B. Freehart, R. Gregor, D. Hamilton, E. Heid, D. Hornidge, D. A. Howdle, I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. A. Koulbardis, S. P. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J. D. MacGregor, Y. Maghrbi, D. M. Manley, Z. Marinides, M. Martinez, J. C. McGeorge, B. McKinnon, E. F. McNicoll, D. Mekterovic, V. Metag

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon. The measurement pioneers a novel polarimetry technique, which can be applied to many other nuclear and hadron physics experiments. The commissioning reaction of 1H(γ→, p⃗)π0 in the range 0.4<Eγ<1.4  GeV validates the technique and provides essential new data to constrain the excitation spectrum of the nucleon.

Original languageEnglish
Article number022501
JournalPhysical Review Letters
Issue number2
Early online date15 Jan 2014
Publication statusPublished - 17 Jan 2014

Keywords / Materials (for Non-textual outputs)

  • MAMI
  • TAPS


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