Speaker
Description
The pion is the lightest hadron in nature, and yet constraining key aspects of its internal structure has been the subject of much theoretical and experimental attention, and remains a challenge. Of specific phenomenological interest is the electromagnetic form factor of the pion whose behavior across a range of momentum transfers, $Q^2$, will help probe the transition between the perturbative and non-perturbative regimes of QCD. While the form factor of the pion has been well determined at low $Q^2$, experiments measuring large $Q^2$ are planned, motivating improved theoretical calculations. These calculations, however, have traditionally presented significant numerical challenges, as signal-to-noise ratios decrease significantly at large $Q^2$. We implement techniques such as momentum smearing and all-mode averaging with some modifications to improve signal-to-noise in our calculations and overcome these numerical challenges. We present the latest calculations from the QCDSF collaboration of the pion form factor at large momentum transfer from lattice QCD, a first principles non-perturbative approach to the problem.
| I am the presenting author | Yes |
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