26 research outputs found
Polarization and spin transfer of Ω− and Ξ− hyperons at 800 GeV
Fermilab experiment E756 has measured the polarization of W− hyperons produced by 800 GeV protons to be small compared to that of Ξ− hyperons. When produced by a neutral beam containing polarized Λ and Ξ0 hyperons, both the Ω− and the Ξ− have a significant polarization indicating a large spin transfer at high energies.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87380/2/80_1.pd
Search for the Proton Decay Mode proton to neutrino K+ in Soudan 2
We have searched for the proton decay mode proton to neutrino K+ using the
one-kiloton Soudan 2 high resolution calorimeter. Contained events obtained
from a 3.56 kiloton-year fiducial exposure through June 1997 are examined for
occurrence of a visible K+ track which decays at rest into mu+ nu or pi+ pi0.
We found one candidate event consistent with background, yielding a limit,
tau/B > 4.3 10^{31} years at 90% CL with no background subtraction.Comment: 13 pages, Latex, 3 tables and 3 figures, Accepted by Physics Letters
Detecção de Listeria monocytogenes pela técnica de PCR em leite contaminado artificialmente
PCR products generated from unpurified Salmonella DNA are degraded by thermostable nuclease activity
Development of a polymerase chain reaction assay for the detection of Listeria monocytogenes in foods
A preliminary measurement of the Ξ0→Σ0γ branching ratio and asymmetry parameter
In an experiment performed at Fermilab, we have observed the weak radiative decay Ξ0→Σ0γ. From a sample of 85±10 events we have preliminary measurement of the decay branching ratio Γ(Ξ0→Σ0γ)/Γ(Ξ0→ Λπ0)=(3.56±0.42)×10−3 and the asymmetry parameter αΞ=0.20±0.28.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87374/2/440_1.pd