Anti-p.p partial cross sections ar low energy
- Benedettini, A.
- Bertin, A.
- Bruschi, M.
- Capponi, M.
- Collamati, A.
- D'Antone, I.
- De Castro, S.
- Donà, R.
- Ferretti, A.
- Galli, D.
- Giacobbe, B.
- Marconi, U.
- Massa, I.
- Piccinini, M.
- Poli, M.
- Semprini Cesari, N.
- Spighi, R.
- Vecchi, S.
- Vezzani, A.
- Vigotti, F.
- Villa, M.
- Vitale, A.
- À. Zoccoli
- Corradini, M.
- Donzella, A.
- Lodi Rizzini, E.
- Venturelli, L.
- Zenoni, A.
- Cicalô, C.
- Masoni, A.
- Puddu, G.
- Serci, S.
- Temnikov, P.
- Usai, G.L.
- Nomokonov, V.T.
- Prakhov, S.N.
- Rozhdestvensky, A.M.
- Sapozhnikov, M.G.
- Tretyak, V.
- Gianotti, P.
- Guaraldo, C.
- Lanaro, A.
- Lucherini, V.
- Nichitiu, F.
- Petrascu, C.
- Rosca, A.
- Ableev, V.G.
- Cavion, C.
- Gastaldi, U.
- Lombardi, M.
- Maron, G.
- Vannucci, L.
- Vedovato, G.
- Andrighetto, A.
- Morando, M.
- Ricci, R.A.
- Bendiscioli, G.
- Filippini, V.
- Fontana, A.
- Montagna, P.
- Rotondi, A.
- Saino, A.
- Salvini, P.
- Scoglio, C.
- Balestra, F.
- Botta, E.
- Bressani, T.
- Bussa, M.P.
- Busso, L.
- Calvo, D.
- Cerello, P.
- Costa, S.
- D'Isep, F.
- Fava, L.
- Yu Denisov, O.
- 2
- Feliciello, A.
- Ferrero, L.
- Filippi, A.
- Garfagnini, R.
- Grasso, A.
- Maggiora, A.
- Marcello, S.
- Mirfakhraee, N.
- Panzieri, D.
- Parena, D.
- Rossetto, E.
- Tosello, F.
- Valacca, L.
- Zosi, G.
- Agnello, Michelangelo
- Iazzi, Felice
- Minetti, Bruno
- Margagliotti, G.
- Pauli, G.
- Tessaro, S.
- Santi, L.
DOIAbstract
New measurements of the p̄p total annihilation cross-section at very low momenta (around 50 MeV/c) confirm the previous results obtained by the OBELIX collaboration. The measured values are in general agreement with a scattering length approximation of the annihilation cross-section where the p̄p scattering lengths are obtained from measurement of the protonium shifts and widths and which accounts for the Coulomb interaction. Partial annihilation cross-sections and annihilation frequencies for some channels have been measured too. The values of the total and partial cross sections at the lowest p̄ momentum show an unexpected behaviou
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