Estudo da Polarizacao dos Hiperons $$\Xi^-$$ E $$\Omega^-$$ (in Portuguese)
- Pontifical Catholic Univ., Rio de Janeiro (Brazil)
ln this thesis the polarization of the $$\Xi^-$$ hyperon and the $$\Xi^+$$ antihyperon produced in the Fermilab Experiment E791 was determined by the analysis of the weak decay $$\Xi^- \to \Lambda^0 + \pi^-$$. For $$\Xi^-$$ produced in the interaction between a 500 GeV/c $$\pi^-$$ beam and a unpolarized carbon (platinum) target in the region $$p_t$$ > 0.8 GeV/c and $$X_F$$ > 0, -10.9% ± 1.5% (-14.7% ± 3.1%) polarization was obtained perpendicular to the production plane and -5.92% ± 1.69% (-2.41%±3.53% $$\approx O$$) polarization was measured for $$\Xi^+$$. Evidence was also found for a polarized $$\Omega^-$$ hyperon produced in the same experiment in the region $$X_F$$ >0, after analysis of the weak decay $$\Omega^- \to \Lambda^0 + K^-$$.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1372338
- Report Number(s):
- FERMILAB-MASTERS-1995-03; 413491
- Country of Publication:
- United States
- Language:
- Portuguese
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