Kaon and D meson semileptonic form factors from lattice QCD

2014/11/06 by Thomas Primer, Primer, Thomas, D. Toussaint +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1411.1651

openalex publication_date 2014/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present the status of on-going calculations of the K→πlν and D→ K(π) lν semileptonic form factors at q²=0. These form factors are important for the determination of the CKM matrix elements |V_us| and |V_cs(d)| respectively. This work uses the HISQ action for both valence quarks and sea quarks on MILC N_f=2+1+1 configurations. We employ twisted boundary conditions to calculate the form factors at zero momentum transfer directly. The K→π results are an update to previously published results with new data at the physical point. The D→ K(π) results are preliminary.

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