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 two binary reactions was found in both annihilation channels and the annihilation probabilities were evaluated. In addition, the annihilation probability for the prototype Pontecorvo reaction pbar d --> pi- p was measured with the best world statistics: Y = 1.46+-0.08.=10^-5.
Light baryon production in bynary pbar-d annihilation at rest
BENDISCIOLI, GIORGIO;FONTANA, ANDREA;MONTAGNA, PAOLO MARIA;ROTONDI, ALBERTO;
1999-01-01
Abstract
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 two binary reactions was found in both annihilation channels and the annihilation probabilities were evaluated. In addition, the annihilation probability for the prototype Pontecorvo reaction pbar d --> pi- p was measured with the best world statistics: Y = 1.46+-0.08.=10^-5.File in questo prodotto:
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