POLARIZATION OF THE RECOIL PROTON FROM THE NEUTRAL PHOTOPRODUCTION AT 800 AND 910 Mev

Journal Article · Tue May 01 04:00:00 EDT 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.126.1181· OSTI ID:4823739

Mencuccini, C; Querzoli, R; Salvini, G

The measurements on the polarization of the recoil protons from the process gamma + p yields pi /sup o/ + p were extended to higher gamma -ray energies, at 90 deg in the center-of-mass system. At 910 Mev, a polarization P =- 0.45 plus or minus 0.07; at 800 Mev, P = - 0.42 plus or minus 0.10. The rather high values of P agree with the hypothesis that the neutral photoproduction at 500 to 1000 Mev can be described by the three resonant states, and strongly indicate that the second and third resonance have opposite parity. The probable quantum numbers are: T = 1/2, J = 3/2, D pion wave for the second resonance; T = 1/2, J = 5/2, F wave for the third resonance. (auth)

• Research Organization: National Lab. of Frascati, Italy
• NSA Number: NSA-16-022909
• OSTI ID: 4823739
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 126; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ENERGY RANGE
GAMMA RADIATION
MEASURED VALUES
PARITY
PHOTOPRODUCTION
PHYSICS
PIONS
POLARIZATION
PROTONS
QUANTUM MECHANICS
QUANTUM NUMBER
RECOILS
RESONANCE