First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction

V. L. Kashevarov, A. Fix, P. Aguar-Bartolomé, L. K. Akasoy, J. R M Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F B Codling, B. T. Demissie, E. J. Downie, P. Drexler, L. V. Fil'kov & 57 others D. I. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge, I. Jaegle, O. Jahn, T. C. Jude, J. D. Kellie, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J D MacGregor, Y. Maghrbi, D. M. Manley, M. Martinez-Fabregate, J. C. McGeorge, E. F. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D. Middleton, A. Mushkarenkov, B. M K Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, P. B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. N. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, D. Sober, A. Starostin, I. I. Stakovsky, I. M. Suarez, I. Supek, C. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. P. Watts, D. Werthmüller, I. Zamboni, F. Zehr

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The circular photon asymmetry for π0η photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Δ(1700)D33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D33 amplitude.

Original languageEnglish
Pages (from-to)551-554
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume693
Issue number5
DOIs
Publication statusPublished - 18 Oct 2010

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asymmetry
photons
isobars
photoproduction
balls
parity
accelerators
spectrometers
interference
protons
crystals

Keywords

  • Baryon resonances
  • Polarization observables
  • Pseudoscalar meson photoproduction

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction. / Kashevarov, V. L.; Fix, A.; Aguar-Bartolomé, P.; Akasoy, L. K.; Annand, J. R M; Arends, H. J.; Bantawa, K.; Beck, R.; Bekrenev, V.; Berghäuser, H.; Braghieri, A.; Branford, D.; Briscoe, W. J.; Brudvik, J.; Cherepnya, S.; Codling, R. F B; Demissie, B. T.; Downie, E. J.; Drexler, P.; Fil'kov, L. V.; Glazier, D. I.; Gregor, R.; Hamilton, D.; Heid, E.; Hornidge, D.; Jaegle, I.; Jahn, O.; Jude, T. C.; Kellie, J. D.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Kotulla, M.; Koulbardis, A.; Kruglov, S.; Krusche, B.; Lisin, V.; Livingston, K.; MacGregor, I. J D; Maghrbi, Y.; Manley, D. M.; Martinez-Fabregate, M.; McGeorge, J. C.; McNicoll, E. F.; Mekterovic, D.; Metag, V.; Micanovic, S.; Middleton, D.; Mushkarenkov, A.; Nefkens, B. M K; Nikolaev, A.; Novotny, R.; Ostrick, M.; Otte, P. B.; Oussena, B.; Pedroni, P.; Pheron, F.; Polonski, A.; Prakhov, S. N.; Robinson, J.; Rosner, G.; Rostomyan, T.; Schumann, S.; Sikora, M. H.; Sober, D.; Starostin, A.; Stakovsky, I. I.; Suarez, I. M.; Supek, I.; Tarbert, C.; Thiel, M.; Thomas, A.; Unverzagt, M.; Watts, D. P.; Werthmüller, D.; Zamboni, I.; Zehr, F.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 693, No. 5, 18.10.2010, p. 551-554.

Research output: Contribution to journalArticle

Kashevarov, VL, Fix, A, Aguar-Bartolomé, P, Akasoy, LK, Annand, JRM, Arends, HJ, Bantawa, K, Beck, R, Bekrenev, V, Berghäuser, H, Braghieri, A, Branford, D, Briscoe, WJ, Brudvik, J, Cherepnya, S, Codling, RFB, Demissie, BT, Downie, EJ, Drexler, P, Fil'kov, LV, Glazier, DI, Gregor, R, Hamilton, D, Heid, E, Hornidge, D, Jaegle, I, Jahn, O, Jude, TC, Kellie, JD, Keshelashvili, I, Kondratiev, R, Korolija, M, Kotulla, M, Koulbardis, A, Kruglov, S, Krusche, B, Lisin, V, Livingston, K, MacGregor, IJD, Maghrbi, Y, Manley, DM, Martinez-Fabregate, M, McGeorge, JC, McNicoll, EF, Mekterovic, D, Metag, V, Micanovic, S, Middleton, D, Mushkarenkov, A, Nefkens, BMK, Nikolaev, A, Novotny, R, Ostrick, M, Otte, PB, Oussena, B, Pedroni, P, Pheron, F, Polonski, A, Prakhov, SN, Robinson, J, Rosner, G, Rostomyan, T, Schumann, S, Sikora, MH, Sober, D, Starostin, A, Stakovsky, II, Suarez, IM, Supek, I, Tarbert, C, Thiel, M, Thomas, A, Unverzagt, M, Watts, DP, Werthmüller, D, Zamboni, I & Zehr, F 2010, 'First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 693, no. 5, pp. 551-554. https://doi.org/10.1016/j.physletb.2010.09.028
Kashevarov, V. L. ; Fix, A. ; Aguar-Bartolomé, P. ; Akasoy, L. K. ; Annand, J. R M ; Arends, H. J. ; Bantawa, K. ; Beck, R. ; Bekrenev, V. ; Berghäuser, H. ; Braghieri, A. ; Branford, D. ; Briscoe, W. J. ; Brudvik, J. ; Cherepnya, S. ; Codling, R. F B ; Demissie, B. T. ; Downie, E. J. ; Drexler, P. ; Fil'kov, L. V. ; Glazier, D. I. ; Gregor, R. ; Hamilton, D. ; Heid, E. ; Hornidge, D. ; Jaegle, I. ; Jahn, O. ; Jude, T. C. ; Kellie, J. D. ; Keshelashvili, I. ; Kondratiev, R. ; Korolija, M. ; Kotulla, M. ; Koulbardis, A. ; Kruglov, S. ; Krusche, B. ; Lisin, V. ; Livingston, K. ; MacGregor, I. J D ; Maghrbi, Y. ; Manley, D. M. ; Martinez-Fabregate, M. ; McGeorge, J. C. ; McNicoll, E. F. ; Mekterovic, D. ; Metag, V. ; Micanovic, S. ; Middleton, D. ; Mushkarenkov, A. ; Nefkens, B. M K ; Nikolaev, A. ; Novotny, R. ; Ostrick, M. ; Otte, P. B. ; Oussena, B. ; Pedroni, P. ; Pheron, F. ; Polonski, A. ; Prakhov, S. N. ; Robinson, J. ; Rosner, G. ; Rostomyan, T. ; Schumann, S. ; Sikora, M. H. ; Sober, D. ; Starostin, A. ; Stakovsky, I. I. ; Suarez, I. M. ; Supek, I. ; Tarbert, C. ; Thiel, M. ; Thomas, A. ; Unverzagt, M. ; Watts, D. P. ; Werthmüller, D. ; Zamboni, I. ; Zehr, F. / First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2010 ; Vol. 693, No. 5. pp. 551-554.
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T1 - First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction

AU - Kashevarov, V. L.

AU - Fix, A.

AU - Aguar-Bartolomé, P.

AU - Akasoy, L. K.

AU - Annand, J. R M

AU - Arends, H. J.

AU - Bantawa, K.

AU - Beck, R.

AU - Bekrenev, V.

AU - Berghäuser, H.

AU - Braghieri, A.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brudvik, J.

AU - Cherepnya, S.

AU - Codling, R. F B

AU - Demissie, B. T.

AU - Downie, E. J.

AU - Drexler, P.

AU - Fil'kov, L. V.

AU - Glazier, D. I.

AU - Gregor, R.

AU - Hamilton, D.

AU - Heid, E.

AU - Hornidge, D.

AU - Jaegle, I.

AU - Jahn, O.

AU - Jude, T. C.

AU - Kellie, J. D.

AU - Keshelashvili, I.

AU - Kondratiev, R.

AU - Korolija, M.

AU - Kotulla, M.

AU - Koulbardis, A.

AU - Kruglov, S.

AU - Krusche, B.

AU - Lisin, V.

AU - Livingston, K.

AU - MacGregor, I. J D

AU - Maghrbi, Y.

AU - Manley, D. M.

AU - Martinez-Fabregate, M.

AU - McGeorge, J. C.

AU - McNicoll, E. F.

AU - Mekterovic, D.

AU - Metag, V.

AU - Micanovic, S.

AU - Middleton, D.

AU - Mushkarenkov, A.

AU - Nefkens, B. M K

AU - Nikolaev, A.

AU - Novotny, R.

AU - Ostrick, M.

AU - Otte, P. B.

AU - Oussena, B.

AU - Pedroni, P.

AU - Pheron, F.

AU - Polonski, A.

AU - Prakhov, S. N.

AU - Robinson, J.

AU - Rosner, G.

AU - Rostomyan, T.

AU - Schumann, S.

AU - Sikora, M. H.

AU - Sober, D.

AU - Starostin, A.

AU - Stakovsky, I. I.

AU - Suarez, I. M.

AU - Supek, I.

AU - Tarbert, C.

AU - Thiel, M.

AU - Thomas, A.

AU - Unverzagt, M.

AU - Watts, D. P.

AU - Werthmüller, D.

AU - Zamboni, I.

AU - Zehr, F.

PY - 2010/10/18

Y1 - 2010/10/18

N2 - The circular photon asymmetry for π0η photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Δ(1700)D33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D33 amplitude.

AB - The circular photon asymmetry for π0η photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Δ(1700)D33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D33 amplitude.

KW - Baryon resonances

KW - Polarization observables

KW - Pseudoscalar meson photoproduction

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U2 - 10.1016/j.physletb.2010.09.028

DO - 10.1016/j.physletb.2010.09.028

M3 - Article

VL - 693

SP - 551

EP - 554

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 5

ER -