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The s-d transition element and the ΔI = 1/2 rule


Delbourgo, R and Scadron, MD, The s-d transition element and the ΔI = 1/2 rule, Lettere Al Nuovo Cimento, 44, (4) pp. 193-198. ISSN 0375-930X (1985) [Refereed Article]

DOI: doi:10.1007/BF02746805


It is confirmed that the sum of s-d self-energy graphs is gauge-parameter independent on the quark mass shells for finite gauges. It is argued that the result, of orderO(M w -2 ), has physical significance and, to avoid confusion, should not be rotated away by rediagonalization. In particular, the ensuing s π|H W,eff|K s transition becomes the origin of the ΔI = 1/2 rule for kaon decays, consistent with observation, both in magnitude and in sign.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Particle and high energy physics
Research Field:Particle physics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Delbourgo, R (Professor Robert Delbourgo)
ID Code:96401
Year Published:1985
Deposited By:Mathematics and Physics
Deposited On:2014-11-04
Last Modified:2014-11-04

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