Speaker
Description
Far-forward tau neutrinos and antineutrinos come predominantly from Ds± production in pp collisions, followed by the leptonic decay of these mesons. At such large pseudorapidities, theoretical predictions rely on parton distribution functions (PDFs) in a combination of very small and large parton−x values. We evaluate the 3-flavor PROSA PDF uncertainties in a next-to-leading order (NLO) QCD calculation of the flux of tau neutrinos plus antineutrinos. The scale uncertainties are much larger than the PROSA PDF uncertainties in general. The predictions with the central PDFs from other 3-flavor NLO PDF sets, i.e., the CT14, ABMP16 and NNPDF3.1 PDF sets are also shown. The Forward Physics Facility in the high luminosity LHC era will provide data capable of constraining NLO QCD evaluations with these PDF sets.
