With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for nu(mu) to nu(tau) oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify charged current interactions followed by decay of the tau to one of several decay modes. Our ‘‘blind’’ analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the oscillation parameters 3.5 times more stringent than in our previous publication.
A more sensitive search for neutrino(muon) to neutrino(tau) oscillations in NOMAD
CONTA, CLAUDIO;FRATERNALI, MARCO;
1999-01-01
Abstract
With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for nu(mu) to nu(tau) oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify charged current interactions followed by decay of the tau to one of several decay modes. Our ‘‘blind’’ analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the oscillation parameters 3.5 times more stringent than in our previous publication.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
