CP violating effects in coherent elastic neutrino-nucleus scattering processes

Abstract

The presence of new neutrino-quark interactions can enhance, deplete or distort the coherent elastic neutrino-nucleus scattering (CEvNS) event rate. The new interactions may involve CP violating phases that can potentially affect these features. Assuming light vector mediators, we study the effects of CP violation on the CEvNS process in the COHERENT sodium-iodine, liquid argon and germanium detectors. We identify a region in parameter space for which the event rate always involves a dip and another one for which this is never the case. We show that the presence of a dip in the event rate spectrum can be used to constraint CP violating effects, in such a way that the larger the detector volume the tighter the constraints. Furthermore, it allows the reconstruction of the effective coupling responsible for the signal with an uncertainty determined by recoil energy resolution. In the region where no dip is present, we find that CP violating parameters can mimic the Standard Model CEvNS prediction or spectra induced by real parameters. We point out that the interpretation of CEvNS data in terms of a light vector mediator should take into account possible CP violating effects. Finally, we stress that our results are qualitatively applicable for CEvNS induced by solar or reactor neutrinos. Thus, the CP violating effects discussed here and their consequences should be taken into account as well in the analysis of data from multi-ton dark matter detectors or experiments such as CONUS, $\nu$-cleus or CONNIE.

arXiv comment10 pages, 5 figures, 1 table

References in corpus (35)

• Implication of neutrino backgrounds on the reach of next generation dark matter direct detection experiments
• Nuclear symmetry energy probed by neutron skin thickness of nuclei
• Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
• Supernova 1987A Constraints on Sub-GeV Dark Sectors, Millicharged Particles, the QCD Axion, and an Axion-like Particle
• Physics reach of the XENON1T dark matter experiment
• Illuminating Dark Photons with High-Energy Colliders
• Hunting All the Hidden Photons
• Stellar cooling bounds on new light particles: plasma mixing effects
• Exploring nu signals in dark matter detectors
• The Status of Multi-Dimensional Core-Collapse Supernova Models
• COHERENT constraints on nonstandard neutrino interactions
• COHERENT analysis of neutrino generalized interactions
• A COHERENT enlightenment of the neutrino Dark Side
• Constraints on Dark Photon from Neutrino-Electron Scattering Experiments
• COHERENT constraints to conventional and exotic neutrino physics
• The $\nu$-cleus experiment: A gram-scale fiducial-volume cryogenic detector for the first detection of coherent neutrino-nucleus scattering
• Probing neutrino coupling to a light scalar with coherent neutrino scattering
• A model for large non-standard interactions of neutrinos leading to the LMA-Dark solution
• Prospects for exploring New Physics in Coherent Elastic Neutrino-Nucleus Scattering
• Lepton Flavor Violating Non-Standard Interactions via Light Mediators
• Neutrinophilic Non-Standard Interactions
• Physics from solar neutrinos in dark matter direct detection experiments
• Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data
• Probing neutrino transition magnetic moments with coherent elastic neutrino-nucleus scattering
• Non-standard interactions of solar neutrinos in dark matter experiments
• Neutrino Discovery Limit of Dark Matter Direct Detection Experiments in the Presence of Non-Standard Interactions
• Probing light mediators at ultra-low threshold energies with coherent elastic neutrino-nucleus scattering
• Short Baseline Neutrino Oscillations and a New Light Gauge Boson
• Coherency and incoherency in neutrino-nucleus elastic and inelastic scattering
• Response of CsI[Na] to Nuclear Recoils: Impact on Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS)
• A COHERENT Search Strategy for Beyond Standard Model Neutrino Interactions
• Effective Theory and Simple Completions for Neutrino Interactions
• Constraining secret gauge interactions of neutrinos by meson decays
• Secret interactions of neutrinos with light gauge boson at the DUNE near detector
• Chameleon Vector Bosons

Cited by in corpus (32)

• Implications of the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) with Liquid Argon
• Constraining nuclear physics parameters with current and future COHERENT data
• Physics implications of a combined analysis of COHERENT CsI and LAr data
• Future CEvNS experiments as probes of lepton unitarity and light-sterile neutrinos
• Recent probes of standard and non-standard neutrino physics with nuclei
• Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering
• Confirming $U(1{)}_{L_{\mu }-L_{\tau }}$ as a solution for $(g-2{)}_{\mu }$ with neutrinos
• New physics from COHERENT data with improved Quenching Factor
• The physics potential of a reactor neutrino experiment with Skipper CCDs: Measuring the weak mixing angle
• Non-standard neutrino interactions in $U(1{)}^{\prime }$ model after COHERENT data
• A Statistical Analysis of the COHERENT Data and Applications to New Physics
• COHERENT constraints after the COHERENT-2020 quenching factor measurement
• Probing new neutral gauge bosons with CEvNS and neutrino-electron scattering
• Consequences of the Dresden-II reactor data for the weak mixing angle and new physics
• Impact of COHERENT measurements, cross section uncertainties and new interactions on the neutrino floor
• A model for lepton flavor violating non-standard neutrino interactions
• Coherent Elastic Neutrino-Nucleus Scattering with directional detectors
• Constraints on light singlet fermion interactions from coherent elastic neutrino-nucleus scattering
• The physics potential of a reactor neutrino experiment with Skipper-CCDs: Searching for new physics with light mediators
• Sensitivity of direct detection experiments to neutrino magnetic dipole moments
• CP-Violating and Charged Current Neutrino Non-standard Interactions in CE$\nu$NS
• Coherent elastic neutrino-nucleus scattering with the $\nu$BDX-DRIFT directional detector at next generation neutrino facilities
• Recent Progress in Low Energy Neutrino Scattering Physics and Its Implications for the Standard and Beyond the Standard Model Physics
• COHERENT production of a dark fermion
• Cross sections for coherent elastic and inelastic neutrino-nucleus scattering
• Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $\nu$BDX-DRIFT Detector
• LEvEL: Low-Energy Neutrino Experiment at the LHC
• New Physics searches in a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors
• A neutrino window to scalar leptoquarks: from low energy to colliders
• Axionlike particles searches in reactor experiments
• Constraining Non-minimal Dark Sector Scenarios with the COHERENT Neutrino Scattering Data
• Neutrino magnetic and electric dipole moments: From measurements to parameter space