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First measurement of the circular beam asymmetry in the γp→π0ηp reaction (CROSBI ID 166975)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

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. et al. First measurement of the circular beam asymmetry in the γp→π0ηp reaction // Physics letters. B, 693 (2010), 5; 551-554. doi: 10.1016/j.physletb.2010.09.028

Podaci o odgovornosti

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, Milorad ; 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. ; Mekterović, Darko ; Metag, V. ; Mićanović, Saša ; 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. I. ; Starostin, A. ; Stakovsky, I.I. ; Suarez, I.M. ; Supek, Ivan ; Tarbert, C.M. ; Thiel, M. ; Thomas, A. ; Unverzagt, M. ; Watts, D.P. ; Werthmüller, D. ; Zamboni, Ivana ; Zehr, F.

engleski

First measurement of the circular beam asymmetry in the γp→π0ηp reaction

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.

Pseudoscalar meson photoproduction; Baryon resonances; Polarization observables

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Podaci o izdanju

693 (5)

2010.

551-554

objavljeno

0370-2693

10.1016/j.physletb.2010.09.028

Povezanost rada

Fizika

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