Sandip Pakvasa

Measurement of neutrino oscillation with KamLAND: Evidence of spectral distortion

We present results of a study of neutrino oscillation based on a 766 ton-year exposure of KamLAND to reactor anti-neutrinos. We observe 258 \nuebar\ candidate events with energies above 3.4 MeV compared to 365.2 events expected in the absence of neutrino oscillation. Accounting for 17.8 expected background events, the statistical significance for reactor \nuebar disappearance is 99.998%. The observed energy spectrum disagrees with the expected spectral shape in the absence of neutrino oscillation at 99.6% significance and prefers the distortion expected from \nuebar oscillation effects. A two-neutrino oscillation analysis of the KamLAND data gives \DeltaMSq = 7.9

BI-MAXIMAL MIXING OF THREE NEUTRINOS

^{+0.6}_{-0.5}\times10^{-5}

Experimental investigation of geologically produced antineutrinos with KamLAND

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Detecting ντ oscillations at PeV energies

^2

Detecting Nutau Oscillations as PeV Energies

. A global analysis of data from KamLAND and solar neutrino experiments yields \DeltaMSq = 7.9

Discrete symmetry and Cabibbo angle

^{+0.6}_{-0.5}\times10^{-5}

Rare Charm Decays in the Standard Model and Beyond

eV

Decay of high-energy astrophysical neutrinos

^2

Neutrino Decay as an Explanation of Atmospheric Neutrino Observations

and \ThetaParam = 0.40

Cosmic neutrino pevatrons: A brand new pathway to astronomy, astrophysics, and particle physics

^{+0.10}_{-0.07}