The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth’s crust. Tau leptons from ντ charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic component. The data collected between 1 January 2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of ντ at EeV energies. Assuming an Eν-2 differential energy spectrum the limit set at 90% C.L. is Eν^2dNντ/dEν<1.3×10^-7  GeV cm-2 s-1 sr-1 in the energy range 2×10^17  eV<Eν<2×10^19  eV.

Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory / Abraham, J., Abreu, P., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allen, J., Allison, P., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Andringa, S., Anzalone, A., Aramo, C., Argirò, S., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:(2008), pp. 211101-1-211101-7. [10.1103/PhysRevLett.100.211101]

Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory

D'Urso, D.;Scherini, V.;
2008-01-01

Abstract

The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth’s crust. Tau leptons from ντ charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic component. The data collected between 1 January 2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of ντ at EeV energies. Assuming an Eν-2 differential energy spectrum the limit set at 90% C.L. is Eν^2dNντ/dEν<1.3×10^-7  GeV cm-2 s-1 sr-1 in the energy range 2×10^17  eV
2008
Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory / Abraham, J., Abreu, P., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allen, J., Allison, P., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Andringa, S., Anzalone, A., Aramo, C., Argirò, S., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:(2008), pp. 211101-1-211101-7. [10.1103/PhysRevLett.100.211101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/211826
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