Visualization of semileptonic form factors from lattice QCDстатья из журнала
Аннотация: Comparisons of lattice-QCD calculations of semileptonic form factors with experimental measurements often display two sets of points, one each for lattice QCD and experiment. Here we propose to display the output of a lattice-QCD analysis as a curve and error band. This is justified, because lattice-QCD results rely in part on fitting, both for the chiral extrapolation and to extend lattice-QCD data over the full physically allowed kinematic domain. To display an error band, correlations in the fit parameters must be taken into account. For the statistical error, the correlation comes from the fit. To illustrate how to address correlations in the systematic errors, we use the Be\ifmmode \acute{c}\else \'{c}\fi{}irevi\ifmmode \acute{c}\else \'{c}\fi{}-Kaidalov parametrization of the $D\ensuremath{\rightarrow}\ensuremath{\pi}l\ensuremath{\nu}$ and $D\ensuremath{\rightarrow}Kl\ensuremath{\nu}$ form factors, and an analyticity-based fit for the $B\ensuremath{\rightarrow}\ensuremath{\pi}l\ensuremath{\nu}$ form factor ${f}_{+}$.
Год издания: 2009
Авторы: C. Bérnard, Carleton DeTar, Massimo Di Pierro, A. X. El-Khadra, R. T. Evans, E. D. Freeland, Elvira Gámiz, Steven Gottlieb, Urs M. Heller, J. E. Hetrick, Andreas S. Kronfeld, J. Laiho, L. Levkova, Paul B. Mackenzie, M. Okamoto, M. B. Oktay, James N. Simone, R. Sugar, D. Toussaint, R. S. Van de Water
Издательство: American Physical Society
Источник: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology
Ключевые слова: Particle physics theoretical and experimental studies, Quantum Chromodynamics and Particle Interactions, Physics of Superconductivity and Magnetism
Другие ссылки: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (HTML)
OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (HTML)
University of North Texas Digital Library (University of North Texas) (PDF)
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arXiv (Cornell University) (PDF)
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OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (HTML)
University of North Texas Digital Library (University of North Texas) (PDF)
University of North Texas Digital Library (University of North Texas) (HTML)
arXiv (Cornell University) (PDF)
arXiv (Cornell University) (HTML)
DataCite API (HTML)
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Том: 80
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