Charm hadrons and lattice QCD

Abstract

We review two lattice calculations involving charm hadrons: a determination of the vector and scalar form factors of the semileptonic $D\to \pi \ell \nu$ decays, which are relevant for the extraction of the CKM matrix element $|V_{cd}|$ from experimental data, and a calculation of the matrix elements of four-fermion operators relevant to the description of the neutral D mixing in the Standard Model and its extensions. Both analyses are based on the gauge configurations produced by the European Twisted Mass Collaboration with $N_f=2+1+1$ flavors of dynamical quarks. We simulated at three different values of the lattice spacing and with pion masses as small as 210 MeV.

12 pages, 7 figures, in proceeding of the VIII International Workshop On Charm Physics, 5-9 September 2016, Bologna, Italy. arXiv admin note: substantial text overlap with arXiv:1611.00022

References in corpus (15)

• Model-independent description of $B\to \pi l\nu$ decays and a determination of $|V_{ub}|$
• Light hadrons from lattice QCD with light (u,d), strange and charm dynamical quarks
• Up, down, strange and charm quark masses with Nf = 2+1+1 twisted mass lattice QCD
• Improved measurements of D meson semileptonic decays to pi and K mesons
• ΔS=2 and ΔC=2 bag parameters in the SM and beyond from Nf=2+1+1 twisted-mass LQCD
• $K\to \pi$ semileptonic form factors with $N_f=2+1+1$ Twisted Mass fermions
• $D\to \pi ,l\nu$ Semileptonic Decays, $|V_{cd}|$ and 2${}^{nd}$ Row Unitarity from Lattice QCD
• D-Dbar Mixing in the Standard Model and Beyond from Nf=2 Twisted Mass QCD
• Measurement of the $D^0\to {\pi }^{-}{e}^{+}{\nu }_e$ differential decay branching fraction as a function of $q^2$ and study of form factor parameterizations
• Vector Formfactors in Hard Pion Chiral Perturbation Theory
• Light hadrons from Nf=2+1+1 dynamical twisted mass fermions
• A Study of the Semileptonic Charm Decays D^0 --> pi^- e^+ nu_e, D^+ --> pi^0 e^+ nu_e, D^0 --> K^- e^+ nu_e, and D^+ --> barK^0 e^+ nu_e
• D -> πl νand D -> K l νform factors with Nf=2+1+1 Twisted fermions
• Hypercubic Effects in semileptonic $D\to \pi$ decays on the lattice
• The UTfit Collaboration Average of $D$ meson mixing data: Winter 2014