Abstract
Several experimental proposals expect to confirm the recent measurement of the coherent elastic neutrino-nucleus scattering (CEvNS). Motivated in particular by the next generation experiments of the COHERENT collaboration, we study their sensitivity to different tests of the Standard Model and beyond. We analyze the resolution that can be achieved by each future proposed detector in the measurement of the weak mixing angle; we also perform a similar analysis in the context of Nonstandard Interaction (NSI) and in the case of oscillations into a sterile neutrino state. We show that future perspectives are interesting for these types of new physics searches.
Highlights
Despite the fact that coherent elastic neutrino-nucleus scattering (CEvNS) was proposed more than forty years ago [1], it was only recently that the COHERENT collaboration observed this process for the first time by using a CsI[Na] detector exposed to the neutrino flux generated at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory [2].In a CEvNS process, an incident neutrino interacts coherently with the protons and neutrons within the nucleus
In this work we study the future experimental setups proposed by the COHERENT collaboration in order to test the sensitivity of CEvNS to the weak mixing angle and the search of new physics by two different mechanisms; the first one through the introduction of parameters which describe nonstandard interactions (NSI) and the other by introducing the possibility of a specific neutrino flavor to oscillate into a sterile one
Motivated by the future program of the same collaboration, we have studied the expected sensitivity for precision tests of the Standard Models as well as for new physics searches
Summary
Despite the fact that coherent elastic neutrino-nucleus scattering (CEvNS) was proposed more than forty years ago [1], it was only recently that the COHERENT collaboration observed this process for the first time by using a CsI[Na] detector exposed to the neutrino flux generated at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory [2]. COHERENT data have been studied for different purposes such as measurements of nuclear neutron distributions [3], weak mixing angle [4, 5], neutrino electromagnetic properties [6, 7], and tests of NSI neutrino interactions [6, 8, 9]. In this work we study the future experimental setups proposed by the COHERENT collaboration in order to test the sensitivity of CEvNS to the weak mixing angle and the search of new physics by two different mechanisms; the first one through the introduction of parameters which describe NSI and the other by introducing the possibility of a specific neutrino flavor to oscillate into a sterile one. We focus on the specific configurations reported by the COHERENT collaboration for its future stages [10] to have a complementary forecast that includes cases that have not been covered, such as the future perspectives for the measurement of a weak mixing angle for these detectors
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