A conceptual issue on the OPERA neutrino velocity measurement

Details A conceptual issue on the OPERA neutrino velocity measurement A conceptual issue on the OPERA neutrino velocity measurement

2011-10-17

arxiv.org/abs/1110.3783v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures added, discussion improved, analytical proof provided

Scientific paper

We discuss a conceptual issue concerning the OPERA neutrino velocity measurement, in connection with the statistical method employed for the inference of the neutrino time of flight. We expound the theoretical framework that underlies the delicate statistical procedure illustrating its salient aspects. In particular, we show that the order of the two operations of sum and normalization used to combine the single waveforms so as to build the global PDF (as needed for the first measurement made with the 10.5 microseconds-long proton waveforms) is a critical point. We also illustrate how a more efficient Monte Carlo simulation able to test the issue in question should be designed.

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