Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data
Abstract
The longstanding discrepancy between bubble chamber measurements of νμ-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 νμn → μ–pπ0 and νμn→μ–nπ+ 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:
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1305436
- Alternate Identifier(s):
- OSTI ID: 1437940
- Grant/Contract Number:
- SC0008475
- Resource Type:
- Published Article
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 76 Journal Issue: 8; Journal ID: ISSN 1434-6044
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Pion Production; Final State Interaction; Bubble Chamber; Dependent Distribution; Near Detector
Citation Formats
Rodrigues, Philip, Wilkinson, Callum, and McFarland, Kevin. Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data. Germany: N. p., 2016.
Web. doi:10.1140/epjc/s10052-016-4314-3.
Rodrigues, Philip, Wilkinson, Callum, & McFarland, Kevin. Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data. Germany. https://doi.org/10.1140/epjc/s10052-016-4314-3
Rodrigues, Philip, Wilkinson, Callum, and McFarland, Kevin. Wed .
"Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data". Germany. https://doi.org/10.1140/epjc/s10052-016-4314-3.
@article{osti_1305436,
title = {Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data},
author = {Rodrigues, Philip and Wilkinson, Callum and McFarland, Kevin},
abstractNote = {The longstanding discrepancy between bubble chamber measurements of νμ-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 νμn → μ–pπ0 and νμn→μ–nπ+ 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.},
doi = {10.1140/epjc/s10052-016-4314-3},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 76,
place = {Germany},
year = {Wed Aug 24 00:00:00 EDT 2016},
month = {Wed Aug 24 00:00:00 EDT 2016}
}
https://doi.org/10.1140/epjc/s10052-016-4314-3
Web of Science
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