K-->pipi amplitudes from lattice QCD with a light charm quark

Details K-->pipi amplitudes from lattice QCD with a light charm quark K-->pipi amplitudes from lattice QCD with a light charm quark

2006-07-20

arxiv.org/abs/hep-ph/0607220v2

Phys.Rev.Lett.98:082003,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure. Minor modifications. Final version to appear on PRL

Scientific paper

10.1103/PhysRevLett.98.082003

We compute the leading-order low-energy constants of the DeltaS=1 effective weak Hamiltonian in the quenched approximation of QCD with up, down, strange, and charm quarks degenerate and light. They are extracted by comparing the predictions of finite volume chiral perturbation theory with lattice QCD computations of suitable correlation functions carried out with quark masses ranging from a few MeV up to half of the physical strange mass. We observe a large DeltaI=1/2 enhancement in this corner of the parameter space of the theory. Although matching with the experimental result is not observed for the DeltaI=1/2 amplitude, our computation suggests large QCD contributions to the physical DeltaI=1/2 rule in the GIM limit, and represents the first step to quantify the role of the charm quark-mass in K-->pipi amplitudes.

Affiliated with

Also associated with

No associations

Rating

K-->pipi amplitudes from lattice QCD with a light charm quark 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 K-->pipi amplitudes from lattice QCD with a light charm quark, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and K-->pipi amplitudes from lattice QCD with a light charm quark will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-79085