Elsevier

Nuclear Physics A

Volume 465, Issue 4, 20 April 1987, Pages 714-732
Nuclear Physics A

Determination of the ratio σ(p̄n)/σ(p̄p) from p̄4He reaction data

https://doi.org/10.1016/0375-9474(87)90563-XGet rights and content

Abstract

The ratio Rab between the cross sections for the annihilation of p on n and on p bound in the 4He nucleus at four p momenta (at rest, 192.8, 306.2 and 607.7 MeV/c) has been obtained by the analysis of p4He annihilation events detected with a self-shunted streamer chamber exposed to the LEAR p beams. Rab increases from 0.42 ± 0.05 at rest up to 0.66 ± 0.09 at 607.7 MeV/c. The results are discussed in the light of Glauber theory analyses of p2H and p-nucleus data.

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