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 | |
| 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
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
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TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=77957309117&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957309117&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2010.09.028
DO - 10.1016/j.physletb.2010.09.028
M3 - Article
AN - SCOPUS:77957309117
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 -