Abstract
Motivated by the first observation of coherent-elastic neutrino-nucleus scattering at the COHERENT experiment, we confront the neutrino dipole portal giving rise to the transition of the standard model neutrinos to sterile neutrinos with the recently released CENNS 10 data from the liquid argon as well as the CsI data of the COHERENT experiment. Performing a statistical analysis of those data, we show how the transition magnetic moment can be constrained for the range of the sterile neutrino mass between 10 keV and 40 MeV.
Highlights
Performing a standard χ2 analysis of CEνNS spectrum released by the COHERENT experiment on the basis of our nuclear physics calculations similar to that done in previous works, we show how the transition magnetic moment can be constrained and discuss how our results can be compared to the bounds obtained from other experiments
We found that the best fit of the CENNS 10 data is achieved at μν = 0, which is the same as the SM result, and the minimum value of χ2 for CsI data is 6.72
Inspired that CEνNS can be useful to search for NP, we have exploited the experimental results in order to probe the neutrino dipole portal giving rise to the transition of the SM neutrinos to sterile neutrinos
Summary
The COHRENET experiment uses a high intensity neutrino beam produced at the Spallation Neutron Source (SNS) of the Oak Ridge National Laboratory [2, 3, 15]. N with Z protons and N neutrons as a function of the nuclear kinetic recoil energy Tnr is given by [21,22,23]. Where A(Tnr) is the energy-dependent reconstrcution efficiency, Emax = mμ/2 ∼ 52.8 MeV, ND represents the number of target nuclei in the detector mass and is given by ND gmol mdetNA (MN )mol (2.9). [3], the recostruction efficiency for CsI detector is given in terms of the detected number of photoelectrons nPE by the function a f (nPE) = 1 + exp(−k(nPE − n0)) Θ(nPE − 5),. Where fQ is the quenching factor, which is the ratio between the scintillation light emitted in the nuclear and electron recoils It is parameterised as fQ(Tnr) = (0.246 ± 0.006 keVnr) + ((7.8 ± 0.9) × 10−4)Tnr up to 125 keVnr, and is kept constant for larger values. We consider the additional possibility that there is new physics in the neutrino sector, and examine how this may affect the signals observed by the COHERENT experiments
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
