Can the neutrino speed anomaly be defended?

Details Can the neutrino speed anomaly be defended? Can the neutrino speed anomaly be defended?

2011-11-14

arxiv.org/abs/1111.3284v1

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

The OPERA collaboration reported [1] a measurement of the neutrino velocity exceeding the speed of light by 0.025%. For the 730 km distance from CERN in Geneva to the OPERA experiment an early arrival of the neutrinos of 60.7 ns is measured with an accuracy of \pm6.9 ns (stat.) and \pm7.4 ns (sys.). A basic assumption in the analysis is that the proton time structure represents exactly the time structure of the neutrino flux. In this manuscript, we challenge this assumption. We identify two main origins of systematic effects: a group delay due to low pass filters acting on the particular shape of the proton time distribution and a movement of the proton beam at the target during the leading and trailing slopes of the spill.

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