On the computation of hadron-to-hadron transition matrix elements in lattice QCD

Details On the computation of hadron-to-hadron transition matrix elements in lattice QCD On the computation of hadron-to-hadron transition matrix elements in lattice QCD

2011-08-18

arxiv.org/abs/1108.3774v1

Physics

High Energy Physics

High Energy Physics - Lattice

22 pages including 10 figures

Scientific paper

We discuss the accurate determination of matrix elements < f| h_w | i > where neither |i> nor |f> is the vacuum state and h_w is some operator. Using solutions of the Generalized Eigenvalue Problem (GEVP) we construct estimators for matrix elements which converge rapidly as a function of the Euclidean time separations involved. |i> and |f> may be either the ground state in a given hadron channel or an excited state. Apart from a model calculation, the estimators are demonstrated to work well for the computation of the B*B pi-coupling in the quenched approximation. They are also compared to a standard ratio as well as to the "summed ratio method" of [1,2,3]. In the model, we also illustrate the ordinary use of the GEVP for energy levels.

Affiliated with

Also associated with

No associations

Rating

On the computation of hadron-to-hadron transition matrix elements in lattice QCD 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 On the computation of hadron-to-hadron transition matrix elements in lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the computation of hadron-to-hadron transition matrix elements in lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-181461