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# Progress in Determination of Neutrino Oscillation Parameters

Ananthanarayan, B and Gautham, Chitra and Mavalankar, Aquila and Shivaraj, K and Sankar, Uma S and Upadhyay, A (2006) Progress in Determination of Neutrino Oscillation Parameters. In: Current Science, 91 (7). pp. 864-867.

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## Abstract

A press release dated 30 March 2006 from the US laboratory, Fermilab, reported the first results from a new neutrino experiment, MINOS (Main Injector Neutrino Oscillation Search). The main injector accelerator at Fermilab produces an intense beam of muon neutrinos and directs them at the MINOS detector in the Soudan mine, at a depth of 716 m, in Minnesota, 732 km away. The MINOS experiment expected to observe 177 ± 11 events, but observed only 92, which is 7.5 \sigma away from 177. The probability that random fluctuations are responsible for this shortfall is only part in $10^{10}$. Thus the MINOS experiment confirmed that there is a shortfall in the number of muon neutrinos if they are detected a long distance away from their point of production.

Item Type: Journal Article Current Science Indian Academy of Sciences Copyright of this artcile belongs to Indian Academy of Sciences. Division of Physical & Mathematical Sciences > Centre for High Energy Physics 24 Nov 2006 19 Sep 2010 04:32 http://eprints.iisc.ac.in/id/eprint/9033

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