TWO-MESON ANNIHILATIONS OF 1.61-Bev/c ANTIPROTONS IN HYDROGEN

Journal Article · Thu Aug 01 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys.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.131.1287· OSTI ID:4687420

Lynch, G R; Eberhard, P; Kalbfleisch, R; Lannutti, J E; Maglic, B C; Shafer, J B; Stevenson, M L; Xuong, N

Proton-antiproton annihilations at 1.61 13ev/c with only two mesons in the final state have been examined in the 72-in. bubble chamber. The partial cross sections measured are: p + p yields pi /sup -/ + pi /sup +/, 119 plus or minus 30 mu b; p + p yields K/sup -/ + K/sup +/, 55 plus or minus 18 mu b. The K/sup -/ distribution in p + p yields K/sup -/ + K/sup +/ is peaked strongly forward, with 7 of the 11 k/sup -/ mesons produced in the forwardmost tenth of the total solid angle. The pi /sup -/ events show no such effect, with only 2 of the 22 pi /sup -/ mesons being produced in the same forward interval. Careful study of possible contamination of these events indicates that almost all of them are genuine two-meson annihilations. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-17-031333
• OSTI ID: 4687420
• Report Number(s): UCRL-10633; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 131; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
ANNIHILATION
ANTIPROTONS
BUBBLE CHAMBERS
CROSS SECTIONS
ENERGY LEVELS
HYDROGEN
KAONS
MESONS
PHYSICS
PIONS
PROTONS