Nonperturbative tests of the renormalization of mixed clover-staggered currents in lattice QCD

Chakraborty, B., Davies, C. , Donald, G., Dowdall, R., Koponen, J. and Lepage, G. P. (2013) Nonperturbative tests of the renormalization of mixed clover-staggered currents in lattice QCD. In: 31st International Symposium on Lattice Field Theory, Mainz, Germany, 29 July - 3 Aug 2013, pp. 1-7.

90736.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial Share Alike.


Publisher's URL:


The Fermilab Lattice and MILC collaborations have shown in one-loop lattice QCD perturbation theory that the renormalization constants of vector and axial-vector mixed clover-asqtad currents are closely related to the product of those for clover-clover and asqtad-asqtad (local) vector currents. To be useful for future higher precision calculations this relationship must be valid beyond one-loop and very general. We test its validity nonperturbatively using clover and Highly Improved Staggered (HISQ) strange quarks, utilising the absolute normalization of the HISQ temporal axial current. We find that the renormalization of the mixed current differs from the square root of the product of the pure HISQ and pure clover currents by 2−3%. We also compare discretization errors between the clover and HISQ formalisms.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Dowdall, Dr Rachel and Koponen, Dr Jonna and Davies, Professor Christine and Donald, Dr Gordon
Authors: Chakraborty, B., Davies, C., Donald, G., Dowdall, R., Koponen, J., and Lepage, G. P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Copyright Holders:Copyright © 2013 The Authors
Publisher Policy:Reproduced under a Creative Commons License
Related URLs:

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
573721Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience & Technologies Facilities Council (STFC)ST/J000442/1P&A - PHYSICS & ASTRONOMY