Physics implications of recent Dresden-II reactor data

The observation of coherent elastic neutrino nucleus scattering has opened the window to many physics opportunities. This process has been measured by the COHERENT Collaboration using two different targets, first CsI and then argon. Recently, the COHERENT Collaboration has updated the CsI data analysis with a higher statistics and an improved understanding of systematics. Here we perform a detailed statistical analysis of the full CsI data and combine it with the previous argon result. We discuss a vast array of implications, from tests of the Standard Model to new physics probes. In our analyses we take into account experimental uncertainties associated to the efficiency as well as the timing distribution of neutrino fluxes, making our results rather robust. In particular, we update previous measurements of the weak mixing angle and the neutron root mean square charge radius for CsI and argon. We also update the constraints on new physics scenarios including neutrino nonstandard interactions and the most general case of neutrino generalized interactions, as well as the possibility of light mediators. Finally, constraints on neutrino electromagnetic properties are also examined, including the conversion to sterile neutrino states. In many cases, the inclusion of the recent CsI data leads to a dramatic improvement of bounds.

Section: Jhep04(2023)035mentioning

confidence: 63%

Section: Standard Physicsmentioning

confidence: 84%

Section: Jhep04(2023)035 1 Introductionmentioning

confidence: 90%

“…Moreover, one may notice the complementarity with the results obtained in refs. [25,26] using the Dresden-II CEνNS reactor data.…”

Section: Standard Physicsmentioning

confidence: 99%

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