PHOTOPRODUCTION OF K$sup +$ MESONS IN HYDROGEN

Journal Article · Sat Nov 01 04:00:00 EST 1958 · Physical Review (U.S.) Superseded in part by Phys.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.112.981· OSTI ID:4303971

Donoho, P L; Walker, R L

K+ mesons produced in a liquid hydrogen target bombarded by the 1100-Mev bremsstrahlung of the California Institute of Technology synchrotron were observed. It was found that the K+ mesons are produced in associ-ation with LAMBDA o hyperons, in accordance with the law of associated production of strange particles. The K+ mesons were momentum-analyzed in a magnetic spectrometer and identified by their energy loss in three scintillation counters, the very large background due to pions and protons being virtually eliminated by means of time- of-flight discrimination. The differential cross section for the reaction gamma + p -- K+ + lambda o was measured at photon energies of 960, 1000, and 1060 Mev at various K+-meson laboratory angles between 15 and 45 degrees. This cross section shows little variation with photon energy between 960 and 1060 Mev or with centerof-momentum angle over the range investigated. (auth)

• Research Organization: California Inst. of Tech., Pasadena
• NSA Number: NSA-13-004162
• OSTI ID: 4303971
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 112; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BACKGROUND
BREMSSTRAHLUNG
CROSS SECTIONS
DETECTION
ENERGY
ENERGY RANGE
HYDROGEN
HYPERONS
KAONS
LAMBDA PARTICLES
LIQUIDS
MAGNETIC FIELDS
MEASURED VALUES
MOMENTUM
PHOTONS
PHOTOPRODUCTION
PHYSICS AND MATHEMATICS
PIONS
PROTONS
SCINTILLATION COUNTERS
SPECTROMETERS
STRANGE PARTICLES
SYNCHROTRONS
TARGETS
TIME OF FLIGHT METHOD
VELOCITY