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Pion Form Factor in Lattice QCD with Light Pions

Pion Form Factor in Lattice QCD with Light Pions
Author:
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Total Pages:
Release: 2004
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ISBN:

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We present a recent calculation of the pion electromagnetic form factor in Lattice QCD with light (~300 MeV) dynamical pions. Our result is consistent with experimental data and the vector meson dominance (VMD) hypothesis up to momentum transfer of 4 GeV2.


First Principles Calculations of Nucleon and Pion Form Factors

First Principles Calculations of Nucleon and Pion Form Factors
Author: Robert Edwards
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Total Pages:
Release: 2005
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ISBN:

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Lattice QCD is an essential complement to the current and anticipated DOE-supported experimental program in hadronic physics. In this poster we address several key questions central to our understanding of the building blocks of nuclear matter, nucleons and pions. Firstly, we describe progress at computing the electromagnetic form factors of the nucleon, describing the distribution of charge and current, before considering the role played by the strange quarks. We then describe the study of transition form factors to the Delta resonance. Finally, we present recent work to determine the pion form factor, complementary to the current JLab experimental determination and providing insight into the approach to asymptotic freedom.


The Nucleon Axial Form Factor and Staggered Lattice QCD

The Nucleon Axial Form Factor and Staggered Lattice QCD
Author: Aaron Scott Meyer
Publisher:
Total Pages: 154
Release: 2017
Genre:
ISBN: 9780355077728

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The second approach uses lattice QCD to perform a first-principles computation of the nucleon axial form factor. The Highly Improved Staggered Quark (HISQ) action is employed for both valence and sea quarks. The results presented in this dissertation are computed at physical pion mass for one lattice spacing. This work presents a computation of the axial form factor at zero momentum transfer, and forms the basis for a computation of the axial form factor momentum dependence with an extrapolation to the continuum limit and a full systematic error budget.