Measurement of the. Xi. sup 0 r arrow. Sigma. sup 0. gamma. branching ratio and asymmetry parameter

Journal Article · Mon Dec 18 00:00:00 EST 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.2717· OSTI ID:6981868

Teige, S; Beretvas, A; Caracappa, A; Devlin, T; Diehl, H T; Krueger, K; Thomson, G B ^[1]; Border, P; Ho, P M; Longo, M J ^[2]; Duryea, J; Grossman, N; Heller, K; Shupe, M; Thorne, K ^[3]

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1. Department of Physics and Astronomy, Rutgers-The State University of New Jersey, Piscataway, New Jersey 08854 (USA)
2. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (USA)
3. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (USA)

From 85{plus minus}10 examples of the decay {Xi}{sup 0} {r arrow} {Sigma}{sup 0}{gamma} we have measured the decay branching ratio {Gamma}({Xi}{sup 0} {r arrow} {Sigma}{sup 0}{gamma})/{Gamma}({Xi}{sup 0} {r arrow} {Lambda}{pi}{sup 0}) =(3.56{plus minus}0.42(stat){plus minus}0.10(syst)){times}10{sup {minus}3} and the asymmetry parameter {alpha}({Xi}{sup 0} {r arrow} {Sigma}{sup 0}{gamma}) =0.20{plus minus}0.32(stat){plus minus}0.05(syst).

• OSTI ID: 6981868
• Journal Information: Physical Review Letters; (USA), Vol. 63:25; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
SIGMA NEUTRAL PARTICLES
PARTICLE IDENTIFICATION
XI NEUTRAL PARTICLES
RADIATIVE DECAY
ANGULAR DISTRIBUTION
ASYMMETRY
BRANCHING RATIO
EXPERIMENTAL DATA
GAMMA DETECTION
GEV RANGE 100-1000
MASS SPECTRA
MEASURING METHODS
MONTE CARLO METHOD
PARTICLE TRACKS
PROTON BEAMS
BARYONS
BEAMS
DATA
DETECTION
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
HADRONS
HYPERONS
INFORMATION
NUCLEON BEAMS
NUMERICAL DATA
PARTICLE BEAMS
RADIATION DETECTION
SIGMA BARYONS
SIGMA PARTICLES
SPECTRA
STRANGE PARTICLES
XI BARYONS
XI PARTICLES
645101* - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties