Abstract
The Mössbauer spectroscopy is proposed as an alternative experimental technique to be pursued in the detection of Coherent Elastic ν-Nucleus Scattering (CENNS). The neutrino transferred energy in the neutrino-nucleus interaction causes a perturbation at the nuclear level structure of the Mössbauer isotope, leading to a displacement of the isomeric peak of the electromagnetic resonance. We calculate this isomeric shift correction due to the occurrence of CENNS and show that this quantity can be measured with enough precision in a typical Mössbauer spectroscopic experiment. We also shown that a reasonable number of events is expected and allow to extract the correction in the isomeric shift in a typical neutrino reactor flux. This isomeric shift correction is pointed out as a figure of merit for signature of CENNS in our proposal.
Highlights
The search for Coherent Elastic ν-Nucleus Scattering (CENNS) is considered an experimentally challenging task as an introduction of the weak neutral current in the context of the Standard Model (SM) [1,2,3]
The experiment accumulates fifteen months of photoelectrons, which was produced in accordance to the SM prediction, when the pulsed neutrino flux is scattered by 14.6 kg crystal made of CsI doped with Sodium atoms
This Letter is organized as follows: In Section II we summarize the main characteristics of CENNS; in Section III we present our proposal to use the Mössbauer technique to observe CENNS and, in Section IV, we calculate the isomeric shift correction when a neutrino reactor flux are present
Summary
The search for Coherent Elastic ν-Nucleus Scattering (CENNS) is considered an experimentally challenging task as an introduction of the weak neutral current in the context of the Standard Model (SM) [1,2,3]. The experiment accumulates fifteen months of photoelectrons, which was produced in accordance to the SM prediction, when the pulsed neutrino flux is scattered by 14.6 kg crystal made of CsI doped with Sodium atoms. The volume of the nucleus is modified, with the change in electronic density of Kelectron inside the nucleus The magnitude of this change can be measured by the isomeric displacement in a typical Mössbauer experiment. This Letter is organized as follows: In Section II we summarize the main characteristics of CENNS; in Section III we present our proposal to use the Mössbauer technique to observe CENNS and, in Section IV, we calculate the isomeric shift correction when a neutrino reactor flux are present.
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