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'kovD. 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 School of High-Energy Physics

Research output: Contribution to journal › Article

24 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 language	English
Pages (from-to)	551-554
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	693
Issue number	5
DOIs	https://doi.org/10.1016/j.physletb.2010.09.028
Publication status	Published - 18 Oct 2010

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Keywords

Baryon resonances
Polarization observables
Pseudoscalar meson photoproduction

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

Kashevarov, V. L., Fix, A., Aguar-Bartolomé, P., Akasoy, L. K., Annand, J. R. M., Arends, H. J., ... 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, 693(5), 551-554. https://doi.org/10.1016/j.physletb.2010.09.028

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 journal › Article

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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title = "First measurement of the circular beam asymmetry in the γ→pπ0ηp reaction",

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.",

keywords = "Baryon resonances, Polarization observables, Pseudoscalar meson photoproduction",

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

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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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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

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10.1016/j.physletb.2010.09.028