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Title: Prompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects

We 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 7 TeV and at 13 TeV, 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.
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7]
  1. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics; Univ. of Liege, (Belgium). Space sciences, Technologies and Astrophysics Research (STAR) Inst.
  2. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy
  3. Yonsei Univ., Seoul (Korea, Republic of). Dept. of Physics and IPAP; National Inst. of Supercomputing and Networking (KISTI), Daejeon (Korea, Republic of)
  4. Yonsei Univ., Seoul (Korea, Republic of). Dept. of Physics and IPAP
  5. Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
  6. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics and Astronomy
  7. Pennsylvania State Univ., University Park, PA (United States). Dept of Physics
Publication Date:
Grant/Contract Number:
SC-0009913; SC- 0010113; SC-0010114; SC-0002145; 2011-0017430; 2011-0020333; 2015/17/B/ST2/01838; 621-2011-5107; 4.4501.15
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 11; Journal ID: ISSN 1029-8479
Springer Berlin
Research Org:
Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Research Foundation of Korea (NRF); Ministry of Education, Science, and Technology (MEST) (South Korea); Polish National Science Centre (NCN); Swedish Research Council (SRC); Fonds de la Recherche Scienti que-FNRS (Belgium)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Neutrino Physics; Perturbative QCD; Solar and Atmospheric Neutrinos
OSTI Identifier: