<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi></mml:math>-meson semileptonic decays to pseudoscalars from four-flavor lattice QCD
Alexei Bazavov, Carleton DeTar, A. X. El-Khadra, E. Gámiz, Zechariah Gelzer, Steven Gottlieb, William I. Jay, Hwancheol Jeong, Andreas S. Kronfeld, Ruizi Li, Andrew Lytle, Paul B. Mackenzie, Ethan T. Neil, Thomas Primer, James N. Simone, R. Sugar, D. Toussaint, R. S. Van de Water, Alejandro Vaquero
Abstract
New theoretical results give a stringent test of Standard Model and second-row CKM unitarity. Precise calculations using lattice QCD yield percent-level determinations of the CKM matrix elements $|{V}_{c\phantom{\rule{0}{0ex}}d}|$ and $|{V}_{c\phantom{\rule{0}{0ex}}s}|$ from the semileptonic decays $D\ensuremath{\rightarrow}\ensuremath{\pi}\phantom{\rule{0}{0ex}}\ensuremath{\ell}\phantom{\rule{0}{0ex}}\ensuremath{\nu}$ and $D\ensuremath{\rightarrow}K\phantom{\rule{0}{0ex}}\ensuremath{\ell}\phantom{\rule{0}{0ex}}\ensuremath{\nu}$, respectively, as well as the world's first extraction of $|{V}_{c\phantom{\rule{0}{0ex}}d}|$ from the decay ${D}_{s}\ensuremath{\rightarrow}K\phantom{\rule{0}{0ex}}\ensuremath{\ell}\phantom{\rule{0}{0ex}}\ensuremath{\nu}$.