| Autor: |
E. D. Freeland, Alexei Bazavov, Carleton DeTar, R. S. Van de Water, Elvira Gamiz, Steven Gottlieb, Jack Laiho, Aida X. El-Khadra, Ran Zhou, Paul B. Mackenzie, Ethan T. Neil, Doug Toussaint, T. Primer, Andreas S. Kronfeld, James N. Simone, Robert L. Sugar, Javad Komijani, Urs M. Heller, Claude Bernard, Daping Du |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016). |
| DOI: |
10.22323/1.256.0286 |
| Popis: |
We discuss the reduction of errors in the calculation of the form factor $$f_+^{K \pi}(0)$$ with HISQ fermions on the $$N_f=2+1+1$$ MILC configurations from increased statistics on some key ensembles, new data on ensembles with lattice spacings down to 0.042 fm and the study of finite-volume effects within staggered ChPT. We also study the implications for the unitarity of the CKM matrix in the first row and for current tensions with leptonic determinations of $$\vert V_{us}\vert$$. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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