A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule

Details A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule

2004-07-05

arxiv.org/abs/hep-lat/0407007v2

JHEP0411:016,2004

Physics

High Energy Physics

High Energy Physics - Lattice

Latex, 41 pages, 5 figures

Scientific paper

10.1088/1126-6708/2004/11/016

We present a strategy designed to separate several possible origins of the well-known enhancement of the Delta{I}=1/2 amplitude in non-leptonic kaon decays. In particular, we seek to disentangle the contribution of physics at the typical QCD scale (soft-gluon exchange) from the effects at the scale of the charm quark mass. This is achieved by considering QCD with an unphysically light charm quark, so that the theory possesses an approximate SU(4)_L x SU(4)_R chiral symmetry. By computing the relevant operator matrix elements and monitoring their values as the charm quark mass departs from the SU(4)-symmetric situation, the role of the charm quark can be assessed. We study the influence of the charm quark mass in Chiral Perturbation Theory. First results from lattice simulations in the SU(4)-symmetric limit are also discussed.

Affiliated with

Also associated with

No associations

Rating

A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72757