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https://hdl.handle.net/2440/80764
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Type: | Journal article |
Title: | The kaon semileptonic form factor with near physical domain wall quarks |
Author: | Boyle, P. Flynn, J. Garron, N. Juttner, A. Sachrajda, C. Sivalingam, K. Zanotti, J. |
Citation: | The Journal of High Energy Physics, 2013; 2013(8):132-0-132-15 |
Publisher: | Institute of Physics Publishing |
Issue Date: | 2013 |
ISSN: | 1029-8479 1029-8479 |
Statement of Responsibility: | RBC/UKQCD collaboration, P.A. Boyle, J.M. Flynn, N. Garron, A. Jüttner, C.T. Sachrajda, K. Sivalingam, and J.M. Zanotti |
Abstract: | We present a new calculation of the K → π semileptonic form factor at zero momentum transfer in domain wall lattice QCD with N f = 2+1 dynamical quark flavours. By using partially twisted boundary conditions we simulate directly at the phenomenologically relevant point of zero momentum transfer. We perform a joint analysis for all available ensembles which include three different lattice spacings (a = 0.09 - 0.14 fm), large physical volumes (m π L > 3.9) and pion masses as low as 171 MeV. The comprehensive set of simulation points allows for a detailed study of systematic effects leading to the prediction f+Kπ(0)=0.9670(20) (-46+18), where the first error is statistical and the second error systematic. The result allows us to extract the CKM-matrix element | Vu|=0.2237(-8+13) and confirm first-row CKM-unitarity in the Standard Model at the sub per mille level. © 2013 SISSA, Trieste, Italy. |
Keywords: | Lattice QCD Quark Masses and SM Parameters Kaon Physics Standard Model |
Rights: | © SISSA 2013 |
DOI: | 10.1007/JHEP08(2013)132 |
Grant ID: | http://purl.org/au-research/grants/arc/FT100100005 |
Published version: | http://dx.doi.org/10.1007/jhep08(2013)132 |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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