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Non-perturbative Renormalization of Improved Staggered Bilinears · Around

2012

Non-perturbative Renormalization of Improved Staggered Bilinears

Lytle, Andrew T., Sharpe, Stephen R.

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We compute Z-factors for general staggered bilinears on fine (a \approx 0.09 fm) MILC ensembles using both asqtad and HYP-smeared valence actions, comparing the results to the predictions of one-loop perturbation theory.

This is an extension of previous work on the coarse (a \approx 0.12 fm) MILC ensembles.
It provides a laboratory for studying NPR methodology in the staggered context, and is an important stepping stone for fully non-perturbative matching factors in ongoing computations of B_K and other weak matrix elements.
We also implement non-exceptional RI/SMOM renormalization conditions using the asqtad action and present first results.

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G. Martinelli et al
1995
Earlier work this paper cites.
S. Aoki et al
1999
Earlier work this paper cites.
A. T. Lytle, PoS LAT2009
Original
2009
Earlier work this paper cites.

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C. Sturm et al
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2009
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A.T. Lytle, University of Washington Ph.D. thesis (2010), unpublished
2010
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A. T. Lytle and S. R. Sharpe, PoS LATTICE 2011
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2011
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A.T. Lytle and S.R. Sharpe, in preparation
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Cited in the paper.

Then

J. Kim, W. Lee, S. R. Sharpe, Phys. Rev. D83
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2011
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T. Bae et al
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2012
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J. Kim, B. Yoon and W. Lee, arXiv:1211.2077 [hep-lat]
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2077
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