Pionic annihilation of antiprotons stopped on 3He

G. Bendiscioli, V. Filippini, A. Rotondi, P. Salvini, A. Venaglioni, S. Bossolasco, M. P. Bussa, L. Busso, L. Fava, L. Ferrero, A. Maggiora, D. Panzieri, G. Piragino, R. Piragino, F. Tosello, Yu A. Batusov, I. V. Falomkin, G. B. Pontecorvo, A. M. Rozhdestvensky, M. G. SapozhnikovV. I. Tretyak, C. Guaraldo, E. Lodi Rizzini, A. Haatuft, A. Halsteinslid, K. Myklebost, J. M. Olsen, F. O. Breivik, T. Jacobsen, S. O. Sørensen, F. Balestra, A. Zenoni

Research output: Contribution to journalArticlepeer-review

Abstract

The pionic annihilation of antiprotons stopped on 3He nuclei in a self-shunted streamer chamber exposed to the antiproton beam of LEAR is studied. The data concern charged-particle multiplicity distributions, branching ratios for different final states, the probability of final-state interaction, π-, π+, p and d momentum spectra, like and unlike pion angular correlations, π and other charged-particle angular correlations. The comparison of the 3He data with those obtained on 1H, 2H and 4He does not reveal relevant effects due to the increase of the nucleon number; the small differences can be seen as due to a weak final-state interaction.

Original languageEnglish
Pages (from-to)683-708
Number of pages26
JournalNuclear Physics A
Volume518
Issue number4
DOIs
Publication statusPublished - 26 Nov 1990
Externally publishedYes

Keywords

  • Nuclear reactions

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