Antiproton-Proton Annihilation into Electron-Positron Pairs and Gamma-Ray Pairs
نویسندگان
چکیده
منابع مشابه
On Electron-Positron Annihilation into Nucleon-Antinucleon Pairs
We discuss the puzzling experimental results on baryon-antibaryon production in e+e− annihilation close to the threshold, in particular the fact that σ(e+e− → n̄n) >∼ σ(e+e− → p̄p). We discuss an interpretation in terms of a two-step process, via an intermediate coherent isovector state serving as an intermediary between e+e− and the baryon-antibaryon system. We provide evidence that the isovecto...
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Annihilation of the electron-positron pairs (or (e−, e)−pairs, for short) in various polyelectrons e n e− m = e− m e n (where n ≥ 1 and m ≥ 1) is considered. In particular, we discuss the threeand four-photon annihilation of the (e−, e)−pairs in the three-body Ps− ion and four-body bi-positronium system Ps2. It is shown that the five-body e + 2 e − 3 ion is an unbound system. The closed form ex...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1969
ISSN: 0031-899X
DOI: 10.1103/physrev.184.1415