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Energy spectrum of tau leptons induced by the high energy Earth-skimming neutrinos

Jie-Jun Tseng1,*, Tsung-Wen Yeh2,†, H. Athar2,3,‡, M. A. Huang4,§, Fei-Fain Lee2,∥, and Guey-Lin Lin2,¶

  • 1Institute of Physics, Academia Sinica, Taipei 115, Taiwan
  • 2Institute of Physics, National Chiao-Tung University, Hsinchu 300, Taiwan
  • 3Physics Division, National Center for Theoretical Sciences, Hsinchu 300, Taiwan
  • 4Department of Physics, National Taiwan University, Taipei 10617, Taiwan

  • *Email address: gen@phys.sinica.edu.tw
  • Email address: twyeh@cc.nctu.edu.tw
  • Email address: athar@phys.cts.nthu.edu.tw
  • §Present address: National United University, Miaoli 360, Taiwan. Email address: huangmh@phys.ntu.edu.tw
  • Email address: u8727515@cc.nctu.edu.tw
  • Email address: glin@cc.nctu.edu.tw

Phys. Rev. D 68, 063003 – Published 26 September, 2003

DOI: https://doi.org/10.1103/PhysRevD.68.063003

Abstract

We present a semianalytic calculation of the tau-lepton flux emerging from the Earth induced by incident high energy neutrinos interacting inside the Earth for 105<~Eν/GeV<~1010. We obtain results for the energy dependence of the tau-lepton flux coming from the Earth-skimming neutrinos, because of the neutrino-nucleon charged-current scattering as well as the resonant ν¯ee scattering. We illustrate our results for several anticipated high energy astrophysical neutrino sources such as the active galactic nuclei, the gamma-ray bursts, and the Greisen-Zatsepin-Kuzmin neutrino fluxes. The tau-lepton fluxes resulting from rock-skimming and ocean-skimming neutrinos are compared. Such comparisons can render useful information about the spectral indices of incident neutrino fluxes.

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