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 Δ(1232) production in binary reactions was found in both annihilation channels: and . The annihilation probabilities for these reactions turned out to be Y=(1.01±0.08)×10−5 and Y=(1.12±0.20)×10−5, respectively. In addition, the annihilation probability for the prototype Pontecorvo reaction was measured with the best world statistics: Y=(1.46±0.08)×10−5.

Light baryon production in binary anti-p d annihilation reactions at rest / O., D., Agnello, M., F., B., E., B., T., B., M. P., B., L., B., D., C., P., C., S., C., D., D., Donà], [.R., L., F., A., F., L., F., A., F., R., G., A., G., Iazzi, F., A., M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 460:1-2(1999), pp. 248-255. [10.1016/S0370-2693(99)00741-8]

Light baryon production in binary anti-p d annihilation reactions at rest

AGNELLO, MICHELANGELO;IAZZI, Felice;MINETTI, Bruno;
1999

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 Δ(1232) production in binary reactions was found in both annihilation channels: and . The annihilation probabilities for these reactions turned out to be Y=(1.01±0.08)×10−5 and Y=(1.12±0.20)×10−5, respectively. In addition, the annihilation probability for the prototype Pontecorvo reaction was measured with the best world statistics: Y=(1.46±0.08)×10−5.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/1845771
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