MULTIPLE MESON PRODUCTION BY PHOTONS IN HYDROGEN

Journal Article · Fri Jul 15 04:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys.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.119.811· OSTI ID:4171323

Chasan, B M; Cocconi, G; Cocconi, V T; Schectman, R M; White, D H

The analysis of 235 events of double meson production by photons with energy up to 1.1 Bev (reaction gamma + p yields p + pi /sup +/ + pi /sup -/ ) observed in a H/sub 2/ diffusion cloud chamber produced the following results. The cross section rises rapidly at about 500 Mev to a value of approximately 70 mu b. The angular, momentum, and Q distributions of the reaction products cannot be satisfactorily accounted for either by a pure statistical model, by a pure isobaric state model, or by a model assuming interaction of the incoming photon with the meson cloud of the proton, leading to pi - pi interaction. The observation of 14 cases of the reactions gamma + p yields p + pi /sup +/ + pi /sup -/ + pi /sup 0/ and gamma + p yields n + pi /sup +/ + pi /sup +/ + pi /sup -/ suggests that the combined cross section for these reactions is about 10 mu b between 700 and 1000 Mev. (auth)

• Research Organization: Cornell Univ., Ithaca, N.Y.
• NSA Number: NSA-14-022318
• OSTI ID: 4171323
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 119; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CLOUD CHAMBERS
CROSS SECTIONS
DIFFUSION CHAMBERS
GEV RANGE
HYDROGEN
INTERACTIONS
MESONS
MOMENTUM
NEUTRONS
PARTICLE MODELS
PARTICLE TRACKS
PHOTONS
PHOTOPRODUCTION
PHYSICS
PIONS
PIONS-MINUS
PIONS-PLUS
PROTONS
SPECTRA