The analyzing power (spin-dependent azimuthal asymmetry) has been observed for the first time in the nuclear Coulomb coherent production process, the ''Primakoff process,'' with the use of the newly constructed 185-GeV/c Fermilab polarized proton beam. We have observed a large asymmetry of this process in the regions of ?t2?<0.001 (GeV/c)2 and 1.36<M(pi0p)<1.52 GeV/c2, where the Coulomb process is predominant. The measured asymmetry is consistent with the analyzing power of the existing low-energy ?+p->pi0+p
Measurement of the analyzing power in the Primakoff process with a high-energy polarized proton beam
G Salvato;
1990
Abstract
The analyzing power (spin-dependent azimuthal asymmetry) has been observed for the first time in the nuclear Coulomb coherent production process, the ''Primakoff process,'' with the use of the newly constructed 185-GeV/c Fermilab polarized proton beam. We have observed a large asymmetry of this process in the regions of ?t2?<0.001 (GeV/c)2 and 1.36File in questo prodotto:
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