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  On probing theta23 in neutrino telescopes

Niro, V., Rodejohann, W., & Choubey, S. (2008). On probing theta23 in neutrino telescopes. Physical Review D, 77(11): 113006. doi:10.1103/PhysRevD.77.113006.

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 Creators:
Niro, Viviana1, Author           
Rodejohann, Werner2, Author           
Choubey, Shandhya3, Author
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              
2Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907556              
3Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, 211019 Allahabad, India, ou_persistent22              

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 Abstract: Among all neutrino mixing parameters, the atmospheric neutrino mixing angle theta23 introduces the strongest variation on the flux ratios of ultrahigh-energy neutrinos. We investigate the potential of these flux ratio measurements at neutrino telescopes to constrain theta23. We consider astrophysical neutrinos originating from pion, muon-damped, and neutron sources and make a comparative study of their sensitivity reach to theta23. It is found that neutron sources are most favorable for testing deviations from maximal theta23. Using a chi2 analysis, we show, in particular, the power of combining (i) different flux ratios from the same type of source, and also (ii) combining flux ratios from different astrophysical sources. We include in our analysis “impure” sources, i.e., deviations from the usually assumed initial (1:2:0), (0:1:0), or (1:0:0) flux compositions.

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Language(s): eng - English
 Dates: 2008-06-13
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: eDoc: 362329
URI: http://arxiv.org/abs/0803.0423
DOI: 10.1103/PhysRevD.77.113006
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Title: Physical Review D
  Alternative Title : Phys.Rev.
Source Genre: Journal
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Pages: - Volume / Issue: 77 (11) Sequence Number: 113006 Start / End Page: - Identifier: -