THE POLARIZATION OF THE PROTON FROM THE PROCESS $gamma$ + p $Yields$ p + $pi$$sup 0$ IN THE REGION OF THE HIGHER RESONANCES
Journal Article
·
· Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B
OSTI ID:4056941
The polarization of the recoll proton in the photoproduction process gamma + p - p + pi /sup 0/ is measured with the beam of the Frascati electrosynchrotron at an angle of 90 deg in the c.m. system, in the energy interval 500 to 900 Mev. A counter technique is used, and the polarization of the proton is revealed by the left to right asymmetry in the elastic scattering of the protons in a carbon target. The experimental results are given. A definite polarization is found, always of the same sign and equal to --0.4 plus or minus .14, --0.63 plus or minus .23,--O.6 plus or minus .25, --O.57 plus or minus .12, --O.38 plus or minus .09, --O.5 plus or minus .17,--O.5 plus o..22 at the gamma -ray energies of 560, 610, 650, 700, 750, 800, and 850 Mev respectively. A discussion is given of these experimental results, together with the data of angular distributions; it is concluded that the results are in agreement with the hypothesis that the second resonance is a transition s5>s/sup / 2/).(auth)
- Research Organization:
- C.N.R.N., Frascati, Italy
- NSA Number:
- NSA-15-014967
- OSTI ID:
- 4056941
- Journal Information:
- Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B, Journal Name: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B Vol. Vol: (10), 19; ISSN NUCIA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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