Branching ratio of the electromagnetic decay of the Σ+(1385)
- Keller, D.
- Hicks, K.
- Adhikari, K. P.
- Adikaram, D.
- Amaryan, M. J.
- Anghinolfi, M.
- Baghdasaryan, H.
- Ball, J.
- Battaglieri, M.
- Bedlinskiy, I.
- Biselli, A. S.
- Bookwalter, C.
- Boiarinov, S.
- Branford, D.
- Briscoe, W. J.
- Brooks, W. K.
- Burkert, V. D.
- Carman, D. S.
- Celentano, A.
- Chandavar, S.
- Cole, P. L.
- Contalbrigo, M.
- Crede, V.
- D’Angelo, A.
- Daniel, A.
- Dashyan, N.
- De Vita, R.
- De Sanctis, E.
- Djalali, C.
- Doughty, D.
- Dupre, R.
- El Alaoui, A.
- El Fassi, L.
- Elouadrhiri, L.
- Eugenio, P.
- Fedotov, G.
- Gabrielyan, M. Y.
- Gevorgyan, N.
- Gilfoyle, G. P.
- Giovanetti, K. L.
- Gohn, W.
- Golovatch, E.
- Gothe, R. W.
- Graham, L.
- Griffioen, K. A.
- Guidal, M.
- Guler, N.
- Guo, L.
- Hafidi, K.
- Hakobyan, H.
- Holtrop, M.
- Ilieva, Y.
- Ireland, D.G.
- Ishkhanov, B. S.
- Isupov, E. L.
- Jo, H. S.
- Joo, K.
- Khandaker, M.
- Khetarpal, P.
- Kim, A.
- Kim, W.
- Klein, F. J.
- Kubarovsky, A.
- Kubarovsky, V.
- Kuleshov, S. V.
- Lu, H. Y.
- MacGregor, I.G.D.
- Mao, Y.
- Markov, N.
- Mayer, M.
- McKinnon, B.
- Meyer, C. A.
- Mineeva, T.
- Mirazita, M.
- Mokeev, V.
- Moutarde, H.
- Munevar, E.
- Nadel-Turonski, P.
- Nasseripour, R.
- Niccolai, S.
- Niculescu, G.
- Niculescu, I.
- Osipenko, M.
- Ostrovidov, A. I.
- Paolone, M.
- Pappalardo, L.
- Paremuzyan, R.
- Park, K.
- Park, S.
- Pasyuk, E.
- Anefalos Pereira, S.
- Pisano, S.
- Pogorelko, O.
- Pozdniakov, S.
- Procureur, S.
- Prok, Y.
- Protopopescu, D.
- Raue, B. A.
- Ricco, G.
- Rimal, D.
- Ripani, M.
- Ritchie, B. G.
- Rosner, G.
- Rossi, P.
- Sabatié, F.
- Saini, M. S.
- Salgado, C.
- Schott, D.
- Schumacher, R. A.
- Seraydaryan, H.
- Sharabian, Y. G.
- Smith, E. S.
- Smith, G. D.
- Sober, D. I.
- Sokhan, D.
- Stepanyan, S. S.
- Stepanyan, S.
- Stoler, P.
- Strauch, S.
- Taiuti, M.
- Tang, W.
- Taylor, C. E.
- Tkachenko, S.
- Vernarsky, B.
- Vineyard, M. F.
- Vlassov, A. V.
- Voskanyan, H.
- Voutier, E.
- Watts, D. P.
- Wood, M. H.
- Zachariou, N.
- Zana, L.
- Zhao, B.
- Zhao, Z. W.
DOIAbstract
The CLAS detector was used to obtain the first ever measurement of the electromagnetic decay of the Σ*+(1385) from the reaction γp→K0Σ*+(1385). A real photon beam with a maximum energy of 3.8 GeV was incident on a liquid-hydrogen target, resulting in the photoproduction of the kaon and Σ∗ hyperon. Kinematic fitting was used to separate the reaction channel from the background processes. The fitting algorithm exploited a new method to kinematically fit neutrons in the CLAS detector, leading to the measured decay widths ratio Σ+(1385)→Σ+γ/Σ+(1385)→Σ+π0=11.95±2.21(stat)+0.53−1.21(sys)% and a deduced partial width of 250.0±56.9(stat)+34.3−41.2(sys) keV. A U-spin symmetry test using the SU(3) flavor-multiplet representation yields predictions f...
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