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Single and multinucleon antiproton–4He annihilation at rest
- Source :
- Nuclear Physics A. 700:159-192
- Publication Year :
- 2002
- Publisher :
- Elsevier BV, 2002.
-
Abstract
- The p annihilation at rest in a NTP 4He-gas target has been studied by means of the Obelix spectrometer installed at the LEAR accelerator of CERN. Reactions with production of 2π−2π+, 2π−3π+, 2π−2π+p, 2π−π+2p, 2π−3p (with pπ>80 MeV/c and pp>300 MeV/c) have been selected and single- and multinucleon annihilations identified. For the first time some known mesonic and baryonic resonances have been observed in p 4He annihilations and branching ratios are evaluated for a number of reaction channels.
Details
- ISSN :
- 03759474
- Volume :
- 700
- Database :
- OpenAIRE
- Journal :
- Nuclear Physics A
- Accession number :
- edsair.doi.dedup.....6d05b6f1c9ac898ecc31d5d69a4355bb