Reconstructing the late-time isovector correlation function through spectroscopy

Sixth Plenary Workshop of the Muon g-2 Theory Initiative [PDF of slides]

The hadronic vacuum polarisation contribution $a_\mu^{\rm HVP}$ can be calculated in lattice QCD from a convolution integral of the vector correlator with a known kernel function. Due to the exponential growth of the signal-to-noise ratio in the correlator at large times, the late-time regime is difficult to constrain with the necessary precision. In this talk we show how to reconstruct the isovector correlator at late times using the $I=1$ $\pi\pi$ scattering states as extracted from a dedicated lattice calculation. Results are presented for an ensemble at the physical pion mass.

2024

lsqfitics

2 minute read

Wrapper of lsqfit for computing various information criteria, particularly those listed in arXiv:2208.14983 [stat.ME], using vegas.

Back to top ↑

2023

Back to top ↑

2022

Back to top ↑

2021

lsqfit-gui

less than 1 minute read

Graphical user interface for lsqfit using dash.

Back to top ↑

2020

spacetime-plots

2 minute read

A python noteboook for plotting points and lines, expressly written for making spacetime diagrams. To get started with a tutorial, launch the binder inst...

Back to top ↑