First Observation of Coherent pi0 Production in Neutrino Nucleus Interactions with E(nu) < 2-GeV

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The MiniBooNE experiment at Fermilab has amassed the largest sample to date of {pi}{sup 0}s produced in neutral current (NC) neutrino-nucleus interactions at low energy. This paper reports a measurement of the momentum distribution of {pi}{sup 0}s produced in mineral oil (CH{sub 2}) and the first observation of coherent {pi}{sup 0} 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 ... continued below

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14 pages

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Aguilar-Arevalo, A.A.; U., /Columbia; Anderson, C.E.; U., /Yale; Bazarko, A.O.; U., /Princeton et al. March 1, 2008.

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Description

The MiniBooNE experiment at Fermilab has amassed the largest sample to date of {pi}{sup 0}s produced in neutral current (NC) neutrino-nucleus interactions at low energy. This paper reports a measurement of the momentum distribution of {pi}{sup 0}s produced in mineral oil (CH{sub 2}) and the first observation of coherent {pi}{sup 0} 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 {pi}{sup 0} production at MiniBooNE. These measurements are of immediate utility because they quantify an important background to MiniBooNE's search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations.

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14 pages

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  • Journal Name: Phys.Lett.B664:41-46,2008; Journal Volume: 664

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  • Report No.: FERMILAB-PUB-08-102-E
  • Grant Number: AC02-07CH11359
  • DOI: 10.1016/j.physletb.2008.05.006 | External Link
  • Office of Scientific & Technical Information Report Number: 929121
  • Archival Resource Key: ark:/67531/metadc893237

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  • March 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 7, 2016, 11:48 a.m.

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Aguilar-Arevalo, A.A.; U., /Columbia; Anderson, C.E.; U., /Yale; Bazarko, A.O.; U., /Princeton et al. First Observation of Coherent pi0 Production in Neutrino Nucleus Interactions with E(nu) < 2-GeV, article, March 1, 2008; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc893237/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.