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Title: Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data

The longstanding discrepancy between bubble chamber measurements of ν μ-induced single pion production channels has led to large uncertainties in pion production cross section parameters for many years. We extend the reanalysis of pion production data in deuterium bubble chambers where this discrepancy is solved to include the ν μn → μ 0 and ν μn→μ + channels, and use the resulting data to fit the parameters of the GENIE pion production model. We find a set of parameters that can describe the bubble chamber data better than the GENIE default parameters, and provide updated central values and reduced uncertainties for use in neutrino oscillation and cross section analyses which use the GENIE model. Here, we find that GENIE’s non-resonant background prediction has to be significantly reduced to fit the data, which may help to explain the recent discrepancies between simulation and data observed by the MINERνA coherent pion and NOνA oscillation analyses.
Authors:
 [1] ;  [2] ;  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Univ. of Bern, Bern (Switzerland)
Publication Date:
Grant/Contract Number:
SC0008475
Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 8; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Univ. of Rochester, Rochester, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Pion Production; Final State Interaction; Bubble Chamber; Dependent Distribution; Near Detector
OSTI Identifier:
1305436
Alternate Identifier(s):
OSTI ID: 1437940