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Measurement of the atmospheric nu (mu) energy spectrum from 100 GeV to 200 TeV with the ANTARES telescope

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Measurement of the atmospheric nu (mu) energy spectrum from 100 GeV to 200 TeV with the ANTARES telescope

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Barrios Martí, Javier; Gómez González, Juan Pablo; Hernández Rey, Juan José; Lambard, Guillaume; Mangano, Salvatore; Sánchez Losa, Agustín; Yepes Ramírez, Harold; Zornoza Gómez, Juan de Dios; Zúñiga Román, Juan; Astraatmadja, T.; Aubert, Jean-Jacques; Baret, Bruny; Basa, Stéphane; Bertin, V.; Biagi, S.; Bigongiari, C.; Bogazzi, C.; Bouhou, B.; Bouwhuis, M. C.

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1140/epjc/s10052-013-2606-4

Atmospheric neutrinos are produced during cascades initiated by the interaction of primary cosmic rays with air nuclei. In this paper, a measurement of the atmospheric energy spectrum in the energy range 0.1-200 TeV is presented, using data collected by the ANTARES underwater neutrino telescope from 2008 to 2011. Overall, the measured flux is similar to 25 % higher than predicted by the conventional neutrino flux, and compatible with the measurements reported in ice. The flux is compatible with a single power-law dependence with spectral index gamma (meas)=3.58 +/- 0.12. With the present statistics the contribution of prompt neutrinos cannot be established.

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