Evolution of the transversity parton distribution functions via two methods: (1) direct integration of the DGLAP equations along the energy scale and (2) fast Mellin inversion.
Project description
tParton
Copyright 2024 Congzhou M Sha
This is an evolution code for the transversity parton distribution functions encountered in hadronic physics.
Installation
First, install this package using pip install tparton
.
Running tParton as a standalone script
To evolve a transversity pdf, run the command python -m tparton m
. This uses the Mellin moment by default. To use the energy scale integration method, run the command python -m tparton t
. Use python -m tparton m -h
or python -m tparton t -h
for help.
An example run will look like:
python -m tparton m INPUTPDF.dat 3.1 10.6 --morp plus -o OUTPUTPDF.dat
We are evolving the INPUTPDF.dat
from 3.1 to 10.6 GeV2, for the plus type distribution, and with output written to OUTPUTPDF.dat
.
Importing the tParton package
To use the Hirai ODE integration method:
from tparton.t_evolution import evolve
To use the Vogelsang Mellon moment method:
from tparton.m_evolution import evolve
Run help(evolve)
for a description of the inputs.
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