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 School of High-Energy Physics

Research output: Contribution to journal › Article

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 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

Fingerprint

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

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 VL, Fix A, Aguar-Bartolomé P, Akasoy LK, Annand JRM, Arends HJ et al. First measurement of the circular beam asymmetry in the γ→pπ⁰ηp reaction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2010 Oct 18;693(5):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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Access to Document

10.1016/j.physletb.2010.09.028