Large Short-Baseline antinu_mu Disappearance

Abstract

We analyze the LSND, KARMEN and MiniBooNE data on short-baseline antinu_mu -> antinu_e oscillations and the data on short-baseline antinu_e disappearance obtained in the Bugey-3 and CHOOZ reactor experiments in the framework of 3+1 antineutrino mixing, taking into account the MINOS observation of long-baseline antinu_mu disappearance and the KamLAND observation of very-long-baseline antinu_e disappearance. We show that the fit of the data implies that the short-baseline disappearance of antinu_mu is relatively large. We obtain a prediction of an effective amplitude sin^2 2 theta_{mu mu} >~ 0.1 for short-baseline antinu_mu disappearance generated by 0.2 <~ Delta m^2 <~ 1 eV^2, which could be measured in future experiments.

6 pages; final version published in Phys.Rev.D 83 (2011) 053006

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• Light Sterile Neutrinos: Status and Perspectives
• A Search for Single Photon Events in Neutrino Interactions
• Possible indication for non-zero neutrino mass and additional neutrino species from cosmological observations
• Compatibility of $A_4$ Flavour Symmetric Minimal Extended Seesaw with $(3+1)$ Neutrino Data
• Sterile Neutrino Fits
• Atmospheric neutrinos as a probe of eV^2-scale active-sterile oscillations
• Prospect for Charge Current Neutrino Interactions Measurements at the CERN-PS
• Light sterile neutrinos and their implications on currently running long-baseline and neutrinoless double beta decay experiments
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• Dark Radiation and Inflationary Freedom
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