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First observation of coherent π0 production in neutrino–nucleus interactions with Eν<2 GeV

Aguilar-Arevalo, A.A. and Nowak, Jaroslaw (2008) First observation of coherent π0 production in neutrino–nucleus interactions with Eν<2 GeV. Physics Letters B, 664 (1-2). pp. 41-46. ISSN 0370-2693

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Abstract

The MiniBooNE experiment at Fermilab has amassed the largest sample to date of π0s produced in neutral current (NC) neutrino–nucleus interactions at low energy. This Letter reports a measurement of the momentum distribution of π0s produced in mineral oil (CH2) and the first observation of coherent π0 production below 2 GeV. In the forward direction, the yield of events observed above the expectation for resonant production is attributed primarily to coherent production off carbon, but may also include a small contribution from diffractive production on hydrogen. Integrated over the MiniBooNE neutrino flux, the sum of the NC coherent and diffractive modes is found to be (19.5±1.1(stat)±2.5(sys))% of all exclusive NC π0 production at MiniBooNE. These measurements are of immediate utility because they quantify an important background to MiniBooNE's search for νμ→νe oscillations.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 66799
Deposited By: ep_importer_pure
Deposited On: 26 Sep 2013 15:12
Refereed?: Yes
Published?: Published
Last Modified: 21 Sep 2017 05:49
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/66799

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