2018/05/31 by Julien Billard, Joseph Johnston, Bradley J. Kavanagh · 1 citation
Physics and Astronomy · #hep-ph #hep-ex
paper · pdf · doi:10.1088/1475-7516/2018/11/016
published as JCAP 11 (2018) 016 · 25 pages, 14 figures + appendices. v2: Added short discussion of leptoquark constraints. v3: matches version published in JCAP
arxiv created 2018/11/13 · arxiv updated 2018/11/14
Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) is a Standard Model process that, although predicted for decades, has only been detected recently by the COHERENT collaboration. Now that CEνNS has been discovered, it provides a new probe for physics beyond the Standard Model. We study the potential to probe New Physics with CEνNS through the use of low temperature bolometers at a reactor source. We consider contributions to CEνNS due to a neutrino magnetic moment (NMM), Non-Standard Interactions (NSI) that may or may not change flavor, and simplified models containing a massive scalar or vector mediator. Targets consisting of Ge, Zn, Si, CaWO4, and Al2O3 are examined. We show that by reaching a percentage-level precision measurement on the CEνNS energy spectrum down to O(10) eV, forthcoming experiments will improve by two orders of magnitude both the CEνNS-based NMM limit and the search for new massive mediators. Additionally, we demonstrate that such dedicated low-threshold CEνNS experiments will lead to unprecedented constraints on NSI parameters (particularly when multiple targets are combined) which will have major implications for the global neutrino physics program.