Production asymmetry of $$\Lambda^0$$ and $${\overline{\Lambda}}^0$$ in $$\pi^{\pm}$$, $$K^{\pm}$$, p - nucleon collisions at 250 GeV/c (in Portuguese)
- Brazilian Center for Physics Research, Rio de Janeiro (Brazil)
Using data from Fermilab xed-target experiment E769, we have measured particleantiparticle production asymmetries for Λ0 hyperons in π± - nucleon interactions, K ± - nucleon interactions and p - nucleon interactions at 250 GeV/c. The asymmetries are measured as functions of Feynman-x (xf ) and pT2 over the ranges 0 ≤ pT2 ≤ 4(GeV/c)2 and -0.12 ≤ xF ≤ 0.12 (for positive beam) and 0 ≤ pT2 ≤ 10(GeV/c)2 and -0.16 ≤ xF ≤ 0:.0 for the negative beam. We find substantial asymmetries, even at xF = 0. We also observe leading-particle-type asymmetries which qualitatively agree with theoretical predictions.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1156382
- Report Number(s):
- FERMILAB-THESIS--2001-06
- Country of Publication:
- United States
- Language:
- Portuguese
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