Prompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects
Jeong, Yu Seon
Reno, Mary Hall
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
CitationPrompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects 2016, 2016 (11) Journal of High Energy Physics
JournalJournal of High Energy Physics
Rights© The Author(s) 2016
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractWe evaluate the prompt atmospheric neutrino flux at high energies using three different frameworks for calculating the heavy quark production cross section in QCD: NLO perturbative QCD, k(T) factorization including low-x resummation, and the dipole model including parton saturation. We use QCD parameters, the value for the charm quark mass and the range for the factorization and renormalization scales that provide the best description of the total charm cross section measured at fixed target experiments, at RHIC and at LHC. Using these parameters we calculate differential cross sections for charm and bottom production and compare with the latest data on forward charm meson production from LHCb at 7TeV and at 13TeV, finding good agreement with the data. In addition, we investigate the role of nuclear shadowing by including nuclear parton distribution functions (PDF) for the target air nucleus using two different nuclear PDF schemes. Depending on the scheme used, we find the reduction of the flux due to nuclear effects varies from 10% to 50% at the highest energies. Finally, we compare our results with the IceCube limit on the prompt neutrino flux, which is already providing valuable information about some of the QCD models.
NoteOpen Access Journal.
VersionFinal published version
SponsorsUS Department of Energy [DE-SC-0010113, DE-SC-0010114, DE-SC-0002145, DE-SC0009913]; National Research Foundation of Korea (RF) grant - Korea government of the Ministry of Education, Science and Technology (MEST) [2011-0017430, 2011-0020333]; National Science Center, Poland [2015/17/B/ST2/01838]; Swedish Research Council [621-2011-5107]; Fonds de la Recherche Scientifique-FNRS, Belgium [4.4501.15]