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hep-ph2024
Perturbative results of matrix elements of the axial current and their relation with the axial anomaly
Ignacio Castelli, Adam Freese, Cédric Lorcé +3
In the Standard Model of particle physics, the axial current is not conserved, due both to fermion masses and to the axial anomaly. Using perturbative quantum chromodynamics, we ca…
hep-ph2024
Numerical implementation of evolution equations for twist-3 collinear PDFs
Simone Rodini, Lorenzo Rossi, Alexey Vladimirov
Twist-3 collinear parton distribution functions (PDFs) are matrix elements of quark-gluon-quark or three-gluons light-cone operators. They depend on three momentum fraction variabl…