One-loop matching of Delta S=2 four-quark operators with improved staggered fermions
Thomas Becher, Elvira Gamiz, Kirill Melnikov
Abstract
We compute O(alphas) lattice-to-continuum perturbative matching coefficients for the Delta S=2 flavor changing four-quark operators for the Asqtad improved staggered action. In conjunction with lattice simulations with three flavors of light, dynamical quarks, our results yield an unquenched determination of BK, the parameter that determines the amount of indirect CP violation in the neutral kaon system. Its value is an important input for the unitarity triangle analysis of weak decays.
Create a lesson
Related papers
Data Free Training of Diffusion Models for Lattice Field Theories
Dennis Grinwald, Ankur Singha, Khaled Kahouli et al.
Time-Domain Observables for Resonant Scattering in Quantum Simulations of Lattice Gauge Theory
Praveen Balaji, Patrick Draper, Enrico Rinaldi
Impact of Window Observables on the Transversity Quark Parton Distribution Function
Daniel Adamiak, Christopher Monahan
Perturbative Renormalization of Noether Currents in SYM with Improved Discretizations
Marios Costa, Elias Antoniou, Salomi Dimou et al.
Evidence of Taste-Symmetry restoration for Kähler-Dirac fermions on Euclidean Dynamical Triangulations
Mingwei Dai, Walter Freeman, Mason Grieb et al.
Hamiltonian framework for Chiral Gauge Theories on a Disk Boundary
Srimoyee Sen