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Title: Tau energy loss and ultrahigh energy skimming tau neutrinos

Abstract

For this paper, we consider propagation of high-energy earth-skimming taus produced in interactions of astrophysical tau neutrinos. For astrophysical tau neutrinos, we take generic power-law flux, E -2 and the cosmogenic flux initiated by the protons. We calculate tau energy loss in several approaches, such as dipole models and the phenomenological approach in which parametrization of the F 2 is used. We evaluate the tau neutrino charged-current cross section using the same approaches for consistency. We find that uncertainty in the neutrino cross section and in the tau energy loss partially compensate giving very small theoretical uncertainty in the emerging tau flux for distances ranging from 2 to 100 km and for the energy range between 10 6 and 10 11 GeV , focusing on energies above 10 8 GeV . When we consider uncertainties in the neutrino cross section, inelasticity in neutrino interactions and the tau energy loss, which are not correlated, i.e. they are not all calculated in the same approach, theoretical uncertainty ranges from about 30% and 60% at 10 8 GeV to about factors of 3.3 and 3.8 at 10 11 GeV for the E -2 flux and the cosmogenic flux, respectively, for the distance ofmore » 10 km rock. The spread in predictions significantly increases for much larger distances, e.g., ~ 1,000 km . Most of the uncertainty comes from the treatment of photonuclear interactions of the tau in transit through large distances. We also consider Monte Carlo calculation of the tau propagation and we find that the result for the emerging tau flux is in agreement with the result obtained using analytic approach. Our results are relevant to several experiments that are looking for skimming astrophysical taus, such as the Pierre Auger Observatory, HAWC and Ashra. We evaluate the aperture for the Auger and discuss briefly application to the other two experiments.« less

Authors:
 [1];  [2];  [2];  [3]
  1. National Inst. of Supercomputing and Networking (KISTI), Daejeon (Korea, Republic of); Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
  2. Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
  3. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1423946
Alternate Identifier(s):
OSTI ID: 1374214
Grant/Contract Number:  
SC0009913; FG02-13ER-41976; SC-0010113
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 4; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Jeong, Yu Seon, Luu, Minh Vu, Reno, Mary Hall, and Sarcevic, Ina. Tau energy loss and ultrahigh energy skimming tau neutrinos. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.043003.
Jeong, Yu Seon, Luu, Minh Vu, Reno, Mary Hall, & Sarcevic, Ina. Tau energy loss and ultrahigh energy skimming tau neutrinos. United States. doi:10.1103/PhysRevD.96.043003.
Jeong, Yu Seon, Luu, Minh Vu, Reno, Mary Hall, and Sarcevic, Ina. Mon . "Tau energy loss and ultrahigh energy skimming tau neutrinos". United States. doi:10.1103/PhysRevD.96.043003. https://www.osti.gov/servlets/purl/1423946.
@article{osti_1423946,
title = {Tau energy loss and ultrahigh energy skimming tau neutrinos},
author = {Jeong, Yu Seon and Luu, Minh Vu and Reno, Mary Hall and Sarcevic, Ina},
abstractNote = {For this paper, we consider propagation of high-energy earth-skimming taus produced in interactions of astrophysical tau neutrinos. For astrophysical tau neutrinos, we take generic power-law flux, E-2 and the cosmogenic flux initiated by the protons. We calculate tau energy loss in several approaches, such as dipole models and the phenomenological approach in which parametrization of the F2 is used. We evaluate the tau neutrino charged-current cross section using the same approaches for consistency. We find that uncertainty in the neutrino cross section and in the tau energy loss partially compensate giving very small theoretical uncertainty in the emerging tau flux for distances ranging from 2 to 100 km and for the energy range between 106 and 1011 GeV , focusing on energies above 108 GeV . When we consider uncertainties in the neutrino cross section, inelasticity in neutrino interactions and the tau energy loss, which are not correlated, i.e. they are not all calculated in the same approach, theoretical uncertainty ranges from about 30% and 60% at 108 GeV to about factors of 3.3 and 3.8 at 1011 GeV for the E-2 flux and the cosmogenic flux, respectively, for the distance of 10 km rock. The spread in predictions significantly increases for much larger distances, e.g., ~ 1,000 km . Most of the uncertainty comes from the treatment of photonuclear interactions of the tau in transit through large distances. We also consider Monte Carlo calculation of the tau propagation and we find that the result for the emerging tau flux is in agreement with the result obtained using analytic approach. Our results are relevant to several experiments that are looking for skimming astrophysical taus, such as the Pierre Auger Observatory, HAWC and Ashra. We evaluate the aperture for the Auger and discuss briefly application to the other two experiments.},
doi = {10.1103/PhysRevD.96.043003},
journal = {Physical Review D},
number = 4,
volume = 96,
place = {United States},
year = {2017},
month = {8}
}

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