Measurement of the asymmetry in the decay (Ω)over-bar+→(Λ)over-barK+→(p)over-bar-π+ K+

被引：6

作者：

Lu, L. C.

Burnstein, R. A.

Chakravorty, A.

Chen, Y. C.

Choong, W. -S.

Clark, K.

Dukes, E. C. ^{[1
]}

Durandet, C.

Felix, J.

Fu, Y.

Gidal, G.

Gustafson, H. R.

Holmstrom, T.

Huang, M.

James, C.

Jenkins, C. M.

Jones, T. D.

Kaplan, D. M.

Longo, M. J.

Luebke, W.

Luk, K. -B.

Nelson, K. S.

Park, H. K.

Perroud, J. -P.

Rajaram, D.

Rubin, H. A.

Volk, J.

White, C. G.

White, S. L.

Zyla, P.

机构：

[1] Univ Virginia, Charlottesville, VA 22904 USA

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Univ Calif Berkeley, Berkeley, CA 94720 USA

[4] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[5] Univ Guanajuato, Leon 37000, Mexico

[6] IIT, Chicago, IL 60616 USA

[7] Univ Lausanne, CH-1015 Lausanne, Switzerland

[8] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[9] Univ Michigan, Ann Arbor, MI 48109 USA

[10] Univ S Alabama, Mobile, AL 36688 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.96.242001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The asymmetry in the p angular distribution in the sequential decay Omega(+)->Lambda K+-> p pi K-+(+) has been measured to be alpha Omega alpha Lambda = [+1: 16 +/- 0: 18 (stat)+/- 0: 17(syst)] x 10(-2) using 1.89 x 10(6) unpolarized Omega(+) decays recorded by the HyperCP (E871) experiment at Fermilab. Using the known value of alpha(Lambda), and assuming that alpha Lambda = -alpha(Lambda), alpha(Omega) = [-1:81 +/- 0: 28(stat)+/- 0: 26(syst)] x 10(-2). A comparison between this measurement of alpha(Omega)alpha(Lambda) and recent measurements of alpha(Omega)alpha(Lambda) made by HyperCP shows no evidence of a violation of CP symmetry.

引用

页数：4

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