3-11 July 2007
Merida, Mexico
Mexico/General timezone
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Contribution Poster

Merida, Mexico - Regency (Hyatt)

Muon energy reconstruction and atmospheric neutrino spectrum Muon energy reconstruction and atmospheric neutrino spectrum unfolding with the IceCube detector

Speakers

  • Dr. Juan-de-Dios ZORNOZA

Primary authors

Abstract content

Data collected during the year 2006 by the first 9 strings of IceCube have been used to measure the energy spectrum of the atmospheric neutrino flux. Atmospheric neutrinos, an important scientific output by itself (for instance, to understand the high-energy hadronic interaction models), are also fundamental in order to check the performance of the detector and to estimate the background for other analysis. The muon energy is one of the parameters that results from reconstruction together with other muon track parameters. The decoupling of calculating the photon density along the muon track from the energy calibration with the simulated data leads to an improved stability of the result. This quantity can be used to calculate the energy spectrum. The spectrum is reconstructed by using unfolding techniques, since the event-by-event reconstruction is very inefficient due to bin-to-bin migrations. We will show the atmospheric neutrino spectrum measured in 2006 by the 9-string configuration of IceCube and the expected performance for the 22-string one deployed during this season and for the complete detector with 80 strings. The impact of these results on the atmospheric neutrino models will be discussed.

If this papers is presented for a collaboration, please specify the collaboration

IceCube

Reference

Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 5 (HE part 2), pages 1275-1278