Branching ratio of the electromagnetic decay of the Sigma(+)(1385)
- Keller, D
- Hicks, K
- Adhikari, K
- Adikaram, D
- Amaryan, M
- Anghinolfi, M
- Baghdasaryan, H
- Ball, J
- Battaglieri, M
- Bedlinskiy, I
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- Bookwalter, C
- Boiarinov, S
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- Briscoe, W
- Brooks, W
- Burkert, V
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- Celentano, A
- Chandavar, S
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- Contalbrigo, M
- Crede, V
- Daniel, A
- Dashyan, N
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- Doughty, D
- Dupre, R
- El Alaoui, A
- El Fassi, L
- Elouadrhiri, L
- Eugenio, P
- Fedotov, G
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- Gevorgyan, N
- Gilfoyle, G
- Giovanetti, K
- Gohn, W
- Golovatch, E
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- Ishkhanov, B
- Isupov, E
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- Kim, W
- Klein, F
- Kubarovsky, A
- Kubarovsky, V
- Kuleshov, S
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- MacGregor, I
- Mao, Y
- Markov, N
- Mayer, M
- McKinnon, B
- Meyer, C
- 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
- Paolone, M
- Pappalardo, L
- Paremuzyan, R
- Park, K
- Park, S
- Pasyuk, E
- Pereira, S
- Pogorelko, O
- Pozdniakov, S
- Procureur, S
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- Protopopescu, D
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- Ritchie, B
- Rosner, G
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- Schumacher, R
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- Smith, G
- Sober, D
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- Stepanyan, S
- Stoler, P
- Strauch, S
- Taiuti, M
- Tang, W
- Taylor, C
- Tkachenko, S
- Vernarsky, B
- Vineyard, M
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- Zhao, B
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- D'ANGELO, ANNALISA
- PISANO, SILVIA
DOIAbstract
The CLAS detector was used to obtain the first ever measurement of the electromagnetic decay of the Sigma*(+)(1385) from the reaction gamma p -> K-0 Sigma*(+)(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 Sigma* 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 Sigma(+)(1385)->Sigma(+)gamma/Sigma(+)(1385)->Sigma(+)pi(0)=11.95 +/-.2.21(stat)(-1.21)(+0.53)(sys)%and a deduced partial width of 250.0 +/- 56.9(stat)(-41.2)(+34.3)(sys) keV. AU-spin symmetry t...
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