Search for CP violation in charged-Xi and Lambda hyperon decays.

Holmstrom, T; Leros, N; Burnstein, R A; Chakravorty, A; Chan, A; Chen, Y C; Choong, W S; Clark, K; Dukes, E C; Durandet, C; Felix, J; Fu, Y; Gidal, G; Gu, P; Gustafson, H R; Ho, C; Huang, M; James, C; Jenkins, C M; Jones, T; Kaplan, D M; Lederman, L M; Longo, M J; Lopez, F; Lu, L C; Luebke, W; Luk, K B; Nelson, K S; Park, H K; Perroud, J-P; Rajaram, D; Rubin, H A; Teng, P K; Volk, J; White, C G; White, S L; Zyla, P

Holmstrom, T; Leros, N; Burnstein, R A; Chakravorty, A; Chan, A; Chen, Y C; Choong, W S; Clark, K; Dukes, E C; Durandet, C; Felix, J; Fu, Y; Gidal, G; Gu, P; Gustafson, H R; Ho, C; Huang, M; James, C; Jenkins, C M; Jones, T; Kaplan, D M; Lederman, L M; Longo, M J; Lopez, F; Lu, L C; Luebke, W; Luk, K B; Nelson, K S; Park, H K; Perroud, J-P; Rajaram, D; Rubin, H A; Teng, P K; Volk, J; White, C G; White, S L; Zyla, P.

Afiliação

Holmstrom T; University of Virginia, Charlottesville, Virginia 22904, USA.

Phys Rev Lett ; 93(26 Pt 1): 262001, 2004 Dec 31.

Article em En | MEDLINE | ID: mdl-15697968

ABSTRACT

ABSTRACT

We have compared the p and p angular distributions in 117 x 10(6) Xi- -->Lambdapi- -->ppi-pi- and 41 x 10(6) Xi+ -->Lambda pi+ -->p pi+pi+ decays using a subset of the data from the HyperCP experiment (E871) at Fermilab. We find no evidence of CP violation, with the direct-CP-violating parameter AXiLambda identical with (alphaXialphaLambda-alpha Xialpha Lambda)/(alphaXialphaLambda+alphaXialphaLambda)=[0.0+/-5.1(stat)+/-4.4(syst)] x 10(-4).

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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2004 Tipo de documento: Article País de afiliação: Estados Unidos

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