Pion form factor with twisted mass QCD
Abdou M. Abdel-Rehim, Randy Lewis
TL;DR
This paper calculates the pion form factor using quenched twisted mass QCD, demonstrating reduced lattice errors and consistency with O(a) improvement across different pion masses and momentum transfers.
Contribution
It applies twisted mass QCD with momentum averaging to accurately compute the pion form factor, showing improved lattice error reduction.
Findings
Results are consistent with O(a) improvement.
Momentum averaging reduces lattice spacing errors.
Calculations cover multiple pion masses and momentum transfers.
Abstract
The pion form factor is calculated using quenched twisted mass QCD with beta=6.0 and maximal twisting angle omega=pi/2. Two pion masses and several values of momentum transfer are considered. The momentum averaging procedure of Frezzotti and Rossi is used to reduce lattice spacing errors, and numerical results are consistent with the expected O(a) improvement.
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