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

被引：41

作者：

Sanuki, T.

Honda, M.

Kajita, T.

Kasahara, K.

Midorikawa, S.

机构：

[1] Univ Tokyo, Int Ctr Elementary Particle Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[3] Aomori Univ, Fac Software & Informat Technol, Aomori 0300943, Japan

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 04期

关键词：

D O I：

10.1103/PhysRevD.75.043005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 pi-production of the hadronic interaction similarly, and compare the atmospheric muon flux calculated using the HKKM04 [M. Honda, T. Kajita, K. Kasahara, and S. Midorikawa, Phys. Rev. D 70, 043008 (2004).] code with experimental measurements. The mu(+)+mu(-) data show good agreement in the 1 similar to 30 GeV/c range, but a large disagreement above 30 GeV/c. The mu(+)/mu(-) 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 [M. Honda , Phys. Rev. D 75, 043006 (2007).].

引用

页数：17

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