Light-Baryon Production in Binary $pd$ Annihilation Reactions at Rest
- Denisov, O Yu
- Agnello, M
- Balestra, F
- Botta, E
- Bressani, Tullio
- Bussa, M P
- Busso, L
- Calvo, D
- Cerello, P G
- Costa, S
- D'Isep, D
- Fava, L
- Feliciello, A
- Ferrero, L
- Filippi, A
- Garfagnini, R
- Grasso, A
- Iazzi, F
- Maggiora, A
- Marcello, S
- Minetti, B
- Mirfakhraee, N
- Panzarasa, A
- Panzieri, D
- Piragino, G
- Tosello, F
- Zosi, G
- Alberico, V
- Bertin, A
- Bruschi, M
- Capponi, M
- D'Antone, I
- De Castro, S
- Ferretti, A
- Galli, D
- Giacobbe, B
- Marconi, U
- Piccinini, M
- Poli, M
- Semprini-Cesari, N
- Spighi, R
- Vecchi, S
- Vagnoni, V M
- Vigotti, F
- Villa, M
- Vitale, A
- Zoccoli, A
- Bianconi, A
- Corradini, M
- Lodi-Rizzini, E
- Venturelli, L
- Zenoni, A
- Cicalò, C
- Masoni, A
- Mauro, S
- Puddu, G
- Serci, S
- Temnikov, P P
- Usai, G L
- Gortchakov, O E
- Prakhov, S N
- Rozhdestvensky, A M
- Sapozhnikov, M G
- Tretyak, V I
- Gianotti, P
- Guaraldo, C
- Lanaro, A
- Lucherini, V
- Nichitiu, F
- Petrascu, C
- Ableev, V G
- Cavion, C
- Gastaldi, Ugo
- Lombardi, M
- Maron, G
- Vannucci, Luigi
- Vedovato, G
- Bendiscioli, G
- Filippini, V
- Fontana, A
- Montagna, P
- Rotondi, A
- Salvini, P
- Pauli, G
- Tessaro, S
- Santi, L
DOIAbstract
We report the study of light baryon production in two-prong annihilation reactions due to antiprotons stopping in gaseous deuterium and detected by the OBELIX spectrometer (LEAR, CERN). A clear signal of the Delta (1232) production in binary reactions was found in both annihilation channels: pd to pi /sup -/ Delta /sup +/( Delta /sup +/ to pi /sup 0/p) and pd to pi /sup 0/ Delta /sup 0/( Delta /sup 0/ to pi /sup -/p). The annihilation probabilities for these reactions turned out to be Y=(1.01+or-0.08)*10/sup -5/ and Y= (1.12+or-0.20)*10/sup -5/, respectively. In addition, the annihilation probability for the prototype Pontecorvo reaction pd to pi /sup -/p was measured with the best world statistics: Y= (1.46+or-0.08)*10/sup -5/. (16 refs)
Add to ORKG