Penguin diagrams for improved staggered fermions

Details Penguin diagrams for improved staggered fermions Penguin diagrams for improved staggered fermions

2004-09-17

arxiv.org/abs/hep-lat/0409104v3

Phys.Rev. D71 (2005) 014502

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 4 figures

Scientific paper

10.1103/PhysRevD.71.014502

We calculate, at the one loop level, penguin diagrams for improved staggered fermion operators constructed using various fat links. The main result is that diagonal mixing coefficients with penguin operators are identical between the unimproved operators and the improved operators using such fat links as Fat7, Fat7+Lepage, $\bar{\rm Fat7}$, HYP (I) and HYP (II). In addition, it turns out that the off-diagonal mixing vanishes for those constructed using fat links of Fat7, $\bar{\rm Fat7}$ and HYP (II). This is a consequence of the the fact that the improvement by various fat links changes only the mixing with higher dimension operators and off-diagonal operators. The results of this paper, combined with those for current-current diagrams, provide the complete matching at the one loop level with all corrections of ${\cal O}(g^2)$ included.

Affiliated with

Also associated with

No associations

Rating

Penguin diagrams for improved staggered fermions 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 Penguin diagrams for improved staggered fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Penguin diagrams for improved staggered fermions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-478667