Magnetic moment of the cascade-zero hyperon

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5232075

Cox, P T

The magnetic moment of the cascade-zero hyperon (=/sup 0/) has been measured to be -1.236 +- 0.014 nuclear magnetons (nm). In the Neutral Hyperon Beam at Fermilab a quarter of a million =/sup 0/ ..-->.. ..lambda pi../sup 0/ decays were detected, by identifying the subsequent ..lambda.. ..-->.. p..pi../sup -/ and ..pi../sup 0/ ..-->.. 2..gamma.. decays in a multiwire proportional chamber magnetic spectrometer and an array of lead glass. The =/sup 0/'s were produced inclusively by 400 GeV protons, at angles of 0, +-2, +-4, +-7.6, and +-10 mrad, and had momenta between 60 and 380 GeV/c. The measured =/sup 0/ polarization is presented as a function of the transverse momentum of the parent =/sup 0/, for each production angle. The average polarization was -0.108 +- 0.006. This polarization was precessed through angles as large as 320/sup 0/. The helicity of the decay ..lambda.. from the =/sup 0/ ..-->.. ..lambda../sub 0//sup 0/ decay (..cap alpha../sub =/sup 0//) was also measured, giving the value ..cap alpha../sub ..lambda../..cap alpha../sub =/sup 0// = -0.264 +- 0.005. An independent sample of a third of a million inclusively-produced ..lambda..'s gave a new value for the magnetic moment of the lambda hyperon, -0.598 +- 0.015 nm.

• Research Organization: Michigan Univ., Ann Arbor (USA)
• OSTI ID: 5232075
• Country of Publication: United States
• Language: English

Related Subjects

645100* -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYONS
BEAMS
CYCLIC ACCELERATORS
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMILAB ACCELERATOR
FERMIONS
GEV RANGE
GEV RANGE 100-1000
HADRONIC PARTICLE DECAY
HADRONS
HELICITY
HYPERONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
LAMBDA PARTICLES
MAGNETIC MOMENTS
NUCLEON BEAMS
NUMERICAL DATA
PARTICLE BEAMS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POLARIZATION
PROTON BEAMS
STRANGE PARTICLES
SYNCHROTRONS
XI PARTICLES