POLARIZATION IN PION-PROTON SCATTERING FROM 670-3750 MeV/c

Journal Article · Sat Oct 01 04:00:00 EDT 1966 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.17.975· OSTI ID:932540

Chamberlain, Owen; Hansroul, Michel J; Johnson, Claiborne H; Grannis, Paul D; Holloway, Leland E; Valentin, Luc; Robrish, Peter R; Steiner, Herbert M

Using a polarized proton target, we have measured the polarization parameter P({theta}) in pion-proton scattering for both positive and negative pions. Because there seems to be a great deal of current interest in the analysis of pion-proton scattering we wish to present these experimental results at this time even though we have not yet completed their analysis. The measurement consisted of scattering pions from polarized target protons and observing the asymmetry in scattered intensity, I({theta}), as the target protons spin directions were reversed. The intensity for scattering from a target of polarization P{sub T} is I({theta}){sub pol.} = I({theta}){sub unpol.} (1 + P({theta})P{sub T}), where the parameter P({theta}) is the same as the recoil proton polarization in scattering pions from unpolarized protons under the assumption that parity is conserved in the process.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USAEC
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 932540
• Report Number(s): UCRL--17186
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 17; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
PARITY
PIONS
POLARIZATION
POLARIZED TARGETS
PROTONS
SCATTERING
SPIN
TARGETS