Abstract
Purchase PDF (332 K)
E-mail Article
Add to my Quick Links
Cited By in Scopus (17)
Purchase PDF (324 K)
10−3. HyperCP expects to measure 
doi:10.1016/0370-2693(94)91327-7 
Copyright © 1994 Published by Elsevier Science B.V.
Gluon dipole penguin contributions to ε′/ε and CP violation in hyperon decays in the standard model
Received 31 January 1994;
revised 24 February 1994.
Editor: M. Dine
Available online 16 October 2002.
References and further reading may be available for this article. To view references and further reading you must purchase this article.
Abstract
We consider the gluon dipole penguin operator contributions to ε′/ε and CP violation in hyperon decays. It has been proposed by Bertolini et al. that the contribution to ε′/ε may be significant. We show that there is a cancellation in the leading order contribution and this contribution is actually suppressed by a factor of order O(mπ2, mK2)/Λ2. We find that the same operator also contributes to CP violation in hyperon decays where it is not suppressed. The gluon dipole penguin operator can enhance CP violation in hyperon decays by as much as 25%.
