6 papers
First Lattice QCD Determination of Lepton-Flavor-Universality Ratios in Light-Meson Leptonic Decays
Peter Boyle, Norman H. Christ, Xu Feng +4
The ratio of electronic to muonic leptonic decay widths, , for the light mesons and , provides a clean test of lepton flavor universality (LFU) and a sensitive pr…
Isospin-breaking effects in inclusive hadronic data for the muon from first principles
Mattia Bruno, Taku Izubuchi, Christoph Lehner +3
The knowledge of isospin-breaking effects in hadronic decays is required for a high-precision determination of the Hadronic-Vacuum-Polarization contribution to from…
Lattice Calculation of Light Meson Radiative Leptonic Decays
Peter Boyle, Norman H. Christ, Xu Feng +4
In this work, we perform a lattice QCD calculation of the branching ratios and the form factors of radiative leptonic decays () using d…
Lattice Calculation of Short-Range Contributions to Neutrinoless Double-Beta Decay at Physical Pion Mass
Peter Boyle, Felix Erben, Xu Feng +7
Neutrinoless double-beta () decays provide an excellent probe for determining whether neutrinos are Dirac or Majorana fermions. The short-range matrix elements associated…
Finite-volume formalism for physical processes with an electroweak loop integral
Xin-Yu Tuo, Xu Feng
This study investigates finite-volume effects in physical processes that involve the combination of long-range hadronic matrix elements with electroweak loop integrals. We adopt th…
Lattice calculation of the and s-wave scattering length
Yu Meng, Chuan Liu, Xin-Yu Tuo +2
We calculate the s-wave scattering length in the sector of and the sector of using three twisted mass gauge ensembles with the lattice spa…