2018/11/27 by Gumaro Rendon, Luka Leskovec, Rendon, Gumaro +15
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.1811.10750
openalex publication_date 2018/11/27 · openalex created_date 2022/08/01 · openalex updated_date 2026/07/28
In this project, we will compute the form factors relevant for B → K^*(→ K π)ℓ+ℓ- decays. To map the finite-volume matrix elements computed on the lattice to the infinite-volume B → K π matrix elements, the K π scattering amplitude needs to be determined using Lüscher's method. Here we present preliminary results from our calculations with 2+1 flavors of dynamical clover fermions. We extract the P-wave scattering phase shifts and determine the K^* resonance mass and the K^* K π coupling for two different ensembles with pion masses of 317(2) and 178(2) MeV.