WCG24 Cross Sections

Authors: Philip L. R. Weigel, Janet M. Conrad, Alfonso Garcia-Soto

This is the repository for the cross section files from arxiv:2408.05866. The columns of each .table file correspond to the columns of the tables in Appendix C.

• CT18ANNLO primary NNLO cross sections from the paper
• CT18ANLO NLO version of the calculations
• EPPS21nlo_CT18Anlo_O16 NLO oxygen cross sections (sigma/A)
• EPPS21nlo_CT18Anlo_Fe56 NLO iron cross sections (sigma/A)
• EPPS21nlo_CT18Anlo_Pb208 NLO oxygen cross sections (sigma/A)
• NNPDF40_nnlo_as_01180_mhou NNLO cross sections using NNPDF4

There is also a sigma_splines subfolder that contains photospline spline tables of the cross sections and the PDF uncertainties:

• sigma_[PDFSET]_[PROJECTILE]_[TARGET]_[FLAVOR].fits: Cross section spline for a given projectile, target, and flavor (including total sum of flavors)
• sigma_[PDFSET]_[PROJECTILE]_[TARGET]_[FLAVOR]_unc.fits: corresponding fractional uncertainties from the PDFs For the EPPS21 cross sections, the target nuclear means that the cross section is the sum of Z protons and N neutrons divided by A.

An example python script for reading the splines can be found in examples/spline_example.py. Be aware that the splines can have some numerical inaccuracies, especially near boundaries.

I plan to include spline tables (using photospline) of the single- and double-differential cross sections and the PDF uncertainties soon.

I will also be releasing NC (without CKMT-PCAC) and nutau cross sections compatible with these cross sections in the near future. Stay tuned!

If you have any questions or find any issues, please contact me ([email protected])!