PHOTOPRODUCTION OF $pi$$sup +$ MESONS FROM HYDROGEN

Journal Article · Tue Oct 15 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys.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.132.830· OSTI ID:4627335

Bazin, M J; Pine, J

The differential cross section for pi /sup +/ photoproduction was determined at 19 points, at center-of-mass angles from 30 to 150 deg, and at photon energies from 162 to 225 Mev. The data are concentrated near 180 Mev, where a full angular distribution was determined. The relative values of the cross sections are accurate to 5% or better, and the absolute normalization is accurate to 4%. The experiment provides data of improved accuracy that are in general consistent with previous results. The extrapolation to threshold gives a value for (k/sup *//p/sup */)(d sigma /d OMEGA )/sup */ at threshold of 16.1 plus or minus mu b/sr. where k/sup */, p/sup */, and (d sigma /d OMEGA )/sup */ are the photon energy, pion momentum, and differential cross section, all in the center-of-mass system. (auth)

• Research Organization: Stanford Univ., Calif.
• NSA Number: NSA-17-039916
• OSTI ID: 4627335
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 132; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CROSS SECTIONS
ENERGY
ERRORS
HYDROGEN
MEV RANGE
MOMENTUM
NUMERICALS
PHOTONS
PHOTOPRODUCTION
PHYSICS
PIONS