First measurement of the depolarization parameter D0n0n of the anti-p p --> anti-n n charge-exchange reaction.
- R. Birsa
- F. Bradamante
- A. Bressan
- S. Dalla Torre Colautti
- M. Giorgi
- M. Lamanna
- A. Martin
- A. Penzo
- P. Schiavon
- F. Tessarotto
- M. P. Macciotta
- A. Masoni
- G. Puddu
- S. Serci
- T. Niinikoski
- A. Rijllart
- A. Ahmidouch
- E. Heer
- R. Hess
- C. Lechanoine Le Luc
- C. Mascarini
- D. Rapin
- J. C. Faivre
- F. Perrot Kunne
- J. Arvieux
- R. Bertini
- R. A. Kunne
- T. Bressani
- E. Chiavassa
- N. De Marco
- A. Musso
- A. Piccotti
- AGNELLO, MICHELANGELO
- IAZZI, Felice
- MINETTI, Bruno
DOIAbstract
The depolarization parameter D0n0n in the charge-exchange reaction has been measured for the first time at the CERN Low Energy Antiproton Ring (LEAR) at 875 MeV/c antiproton beam momentum, in the forward hemisphere. The measured values of D0n0n are always smaller than ±0.3, indicating that the two-spin amplitudes dominate the scattering matrix as suggested by the meson exchange potential models
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