Study of cosmic ray interaction model based on atmospheric muons for the neutrino flux calculation

T. Sanuki, M. Honda, T. Kajita, K. Kasahara, S. Midorikawa

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

We have studied the hadronic interaction for the calculation of the atmospheric neutrino flux by summarizing the accurately measured atmospheric muon flux data and comparing with simulations. We find the atmospheric muon and neutrino fluxes respond to errors in the π-production of the hadronic interaction similarly, and compare the atmospheric muon flux calculated using the HKKM04 code with experimental measurements. The μ++μ- data show good agreement in the 1∼30GeV/c range, but a large disagreement above 30GeV/c. The μ+/μ- ratio shows sizable differences at lower and higher momenta for opposite directions. As the disagreements are considered to be due to assumptions in the hadronic interaction model, we try to improve it phenomenologically based on the quark parton model. The improved interaction model reproduces the observed muon flux data well. The calculation of the atmospheric neutrino flux will be reported in the following paper.

Original languageEnglish
Article number043005
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number4
DOIs
Publication statusPublished - 2007 Feb 12
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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