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

UNSPECIFIED (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:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
?? nuclear and high energy physics ??
ID Code:
66799
Deposited By:
Deposited On:
26 Sep 2013 14:12
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 14:14