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

作者：Abraham J; Abreu P; Aglietta M; Aguirre C; Allard D; Allekotte I; Allen J; Allison P; Alvarez Muniz J; Ambrosio M; Anchordoqui L; Andringa S; Anzalone A; Aramo C; Argiro S; Arisaka K; Armengaud E; Arneodo F; Arqueros F; Asch T; Asorey H; Assis P; Atulugama B S; Aublin J; Ave M; Avila G; Baecker T; Badagnani D; Barbosa A F; Barnhill D; Barroso S L C; Bauleo P; Beatty J J; Beau T; Becker B R; Becker K H; Bellido J A

来源：Physical Review Letters, 2008, 100(21): 211101.

DOI：10.1103/PhysRevLett.100.211101

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 nu(tau) 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 nu(tau) at EeV energies. Assuming an E(nu)(-2) differential energy spectrum the limit set at 90% C. L. is E(nu)(2)dN(nu tau)/dE(nu) < 1: 3 x 10(-7) GeV cm(-2) s(-1) sr(-1) in the energy range 2 x 10(17) eV< E(nu) < 2 x 10(19) eV.

• 出版日期2008-5-30
• 单位东北大学