Particle - Antiparticle Asymmetries in the Production of Baryons in <math> 500 GeV /c </math> <math> π- </math> - Nucleon Interactions

Nota de FísicaPublicado

Particle - Antiparticle Asymmetries in the Production of Baryons in $<math> 500 GeV /c </math>$ $<math> \pi^- </math>$ - Nucleon Interactions

J. dos Anjos

1999

Autores: J. dos Anjos
Tipo: Nota de Física
Status: Publicado
Data de publicação: 1999
Descrição: We present the Fermilab E791 measurement of baryon - antibaryon asymmetries in the production of <math>\Lambda^{\circ}, \Xi, \Omega\,\!</math> and <math>\Lambda_c \,\!</math> in <math> 500 GeV /c \,\!</math> <math>\pi^- \,\!</math> - nucleon. Asymmetries have been measured as a function of <math>x_F\,\!</math> and <math>p_T^2\,\!</math> over the range <math>-0.12 < x_F < 0.12\,\!</math> and <math>p_T^2 < 4 (GeV/c)^2\,\!</math> for hyperons and <math>-0.1 < x_F < 0.3 \,\!</math> and <math>p_T^2<8 (GeV/c)^2\,\!</math> for the <math>\Lambda_c\,\!</math> baryons. We observe clear evidence of leading particle effects and a basic asymmetry even at <math>x_F=0\,\!</math> . These are the first high statistics measurements of the asymmetry in both the target and beam fragmentation regions in a fixed target experiment.
Ano: 1999
Número: CBPF-NF-057/99
Vínculo com tese: Não
Vínculo com bolsa: Não