Nota de FísicaPublicado
Hyperon Production Asymmetries in 500 GeV/c Pion Nucleus Interactions
J. Solano; J. Magnin; Fernando Raimundo Aranha Simão
1997
Dados da publicação
- Autores
- J. Solano; J. Magnin; Fernando Raimundo Aranha Simão
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1997
- Descrição
- We present a preliminary study from Fermilab experiment E791 of <math>\Lambda^0 /\overline{\Lambda}^0, \Xi^- /\Xi^+\,\!</math> and <math>\Omega^- /\Omega^+\,\!</math> production asymmetries from <math>\pi^-\,\!</math> nucleus interactions at 500 Gev/c .The production asymmetries for these particles are studied as a function of <math>x_F\,\!</math> and <math>p_{T}^2\,\!</math>. We observed an asymmetry in the target fragmentation region for <math> \Lambda^{0 '}s \,\!</math> larger than that for <math>\Xi^{'}s\,\!</math>, suggesting diquark effects. The asymmetry for <math>\Omega^{'}s\,\!</math> is significatively smaller than for the other two hyperons consistent with the fact that <math>\Omega^{'}s\,\!</math> do not share valence quarks with either the pion or the target particle. In the beam fragmentation region, the asymmetry tends to 0.1 for both <math> \Lambda^{0 '}s \,\!</math> and <math>\Xi^{'}s\,\!</math>. The asymmetries vs <math>p_T^2\,\!</math> are approximately constant for the three strange baryons under study.
- Ano
- 1997
- Número
- CBPF-NF-072/97
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não