Updated results from the nu(tau) appearance search in NOMAD
NAGIOS: RODERIC FUNCIONANDO

Updated results from the nu(tau) appearance search in NOMAD

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Updated results from the nu(tau) appearance search in NOMAD

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NOMAD Collaboration; Astier, P.; Cervera Villanueva, Anselmo; Gómez Cadenas, Juan José
This document is a artículoDate2000

Updated results from the appearance searches for \numunutau and \nuenutau oscillations in the full NOMAD data sample are reported. The increased data and the use of more refined kinematic schemes for the \nutau CC selection allow a significant improvement of the overall sensitivity. The ``blind analysis' of both the deep-inelastic and the low multiplicity samples yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% C.L. region in the sin22θμτ−Δm2 plane which includes sin22θμτ < 4.4×10−4 at large Δm2 and Δm2<0.8 eV2/c4 at sin22θμτ=1. The corresponding contour in the \nuenutau oscillation hypothesis results in sin22θeτ < 2.2×10−2 at large Δm2 and Δm2<6.5 eV2/c4 at sin22θeτ=1.
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