Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data
Abstract
The standard model coherent elastic neutrino-nucleus scattering (CEνNS) cross section is subject to nuclear form factor uncertainties, mainly driven by the root-mean-square radius of the neutron density distribution. Motivated by COHERENT phases I-III and future multi-ton direct detection dark matter searches, we evaluate these uncertainties in cesium iodide, germanium, xenon and argon detectors. We find that the uncertainties become relevant for momentum transfers q≳20 MeV and are essentially independent of the form factor parameterization. Consequently, form factor uncertainties are not important for CEνNS induced by reactor or solar neutrinos. Taking into account these uncertainties, we then evaluate their impact on measurements of CEνNS at COHERENT, the diffuse supernova background (DSNB) neutrinos and sub-GeV atmospheric neutrinos. We also calculate the relative uncertainties in the number of COHERENT events for different nuclei as a function of recoil energy. For DSNB and atmospheric neutrinos, event rates at a liquid argon detector can be uncertain to more than 5%. Finally, we consider the impact of form factor uncertainties on searches for nonstandard neutrino interactions, sterile neutrinos and neutrino generalized interactions. We point out that studies of new physics using CEνNS data are affected by neutron form factor uncertainties, which if not properly taken intomore »
- Authors:
-
- Universidad Tecnica Federico Santa Maria, Valparaiso (Chile); Univ. of Liege, (Belgium); IFPA, Dep. AGO
- Sun Yat-Sen Univ., Guangzhou (China). School of Physics; Univ. of Hawaii at Manoa, Honolulu, HI (United States). Dept. of Physics and Astronomy
- Univ. of Hawaii at Manoa, Honolulu, HI (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Univ. of Hawaii, Honolulu, HI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1598844
- Grant/Contract Number:
- SC0010504
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 6; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Sierra, D. Aristizabal, Liao, Jiajun, and Marfatia, D. Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data. United States: N. p., 2019.
Web. doi:10.1007/JHEP06(2019)141.
Sierra, D. Aristizabal, Liao, Jiajun, & Marfatia, D. Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data. United States. https://doi.org/10.1007/JHEP06(2019)141
Sierra, D. Aristizabal, Liao, Jiajun, and Marfatia, D. Sat .
"Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data". United States. https://doi.org/10.1007/JHEP06(2019)141. https://www.osti.gov/servlets/purl/1598844.
@article{osti_1598844,
title = {Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data},
author = {Sierra, D. Aristizabal and Liao, Jiajun and Marfatia, D.},
abstractNote = {The standard model coherent elastic neutrino-nucleus scattering (CEνNS) cross section is subject to nuclear form factor uncertainties, mainly driven by the root-mean-square radius of the neutron density distribution. Motivated by COHERENT phases I-III and future multi-ton direct detection dark matter searches, we evaluate these uncertainties in cesium iodide, germanium, xenon and argon detectors. We find that the uncertainties become relevant for momentum transfers q≳20 MeV and are essentially independent of the form factor parameterization. Consequently, form factor uncertainties are not important for CEνNS induced by reactor or solar neutrinos. Taking into account these uncertainties, we then evaluate their impact on measurements of CEνNS at COHERENT, the diffuse supernova background (DSNB) neutrinos and sub-GeV atmospheric neutrinos. We also calculate the relative uncertainties in the number of COHERENT events for different nuclei as a function of recoil energy. For DSNB and atmospheric neutrinos, event rates at a liquid argon detector can be uncertain to more than 5%. Finally, we consider the impact of form factor uncertainties on searches for nonstandard neutrino interactions, sterile neutrinos and neutrino generalized interactions. We point out that studies of new physics using CEνNS data are affected by neutron form factor uncertainties, which if not properly taken into account may lead to the misidentification of new physics signals. The uncertainties quantified here are also relevant for dark matter direct detection search},
doi = {10.1007/JHEP06(2019)141},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2019,
place = {United States},
year = {2019},
month = {6}
}
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