We report a 3.3⁢𝜎 measurement of coherent elastic neutrino-nucleus scattering from solar 8B neutrinos using a 6.77  t×yr exposure from the XENONnT experiment, inferring a solar 8B neutrino flux of (5+3−2)×10⁶ cm⁻² s⁻¹, consistent with previous measurements. In the presence of the 8B “neutrino fog,” we find no evidence for light dark matter, and observe diminishing returns in sensitivity with increasing exposure. A 93% increase in exposure from the previous search improves the median sensitivity to the nucleon scattering cross section for a 5  GeV/c² spin-independent weakly interacting massive particle by 10%. The dataset was also used to measure the weak mixing angle at ∼0.02  GeV/𝑐 momentum transfer and constrain physics beyond the Standard Model.

Probing the solar 8B neutrino fog with XENONnT / Aprile, E., Aalbers, J., Abe, K., Abu Rmeileh, M. m., Adrover, M., Ahmed Maouloud, S., Althueser, L., Andrieu, B., Angelino, E., Antón Martin, D., Armbruster, S. r., Arneodo, F., Baudis, L., Bazyk, M., Beligotti, V., Bellagamba, L., Biondi, R., Bismark, A., Boese, K., Braun, R. m., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 137:9(2026), pp. 1-11. [10.1103/xvpn-w3q9]

Probing the solar 8B neutrino fog with XENONnT

Capelli, C.;
2026

Abstract

We report a 3.3⁢𝜎 measurement of coherent elastic neutrino-nucleus scattering from solar 8B neutrinos using a 6.77  t×yr exposure from the XENONnT experiment, inferring a solar 8B neutrino flux of (5+3−2)×10⁶ cm⁻² s⁻¹, consistent with previous measurements. In the presence of the 8B “neutrino fog,” we find no evidence for light dark matter, and observe diminishing returns in sensitivity with increasing exposure. A 93% increase in exposure from the previous search improves the median sensitivity to the nucleon scattering cross section for a 5  GeV/c² spin-independent weakly interacting massive particle by 10%. The dataset was also used to measure the weak mixing angle at ∼0.02  GeV/𝑐 momentum transfer and constrain physics beyond the Standard Model.
2026
xenon; solar neutrinos; coherent elastic neutrino-nucleus scattering; neutrino fog
01 Pubblicazione su rivista::01a Articolo in rivista
Probing the solar 8B neutrino fog with XENONnT / Aprile, E., Aalbers, J., Abe, K., Abu Rmeileh, M. m., Adrover, M., Ahmed Maouloud, S., Althueser, L., Andrieu, B., Angelino, E., Antón Martin, D., Armbruster, S. r., Arneodo, F., Baudis, L., Bazyk, M., Beligotti, V., Bellagamba, L., Biondi, R., Bismark, A., Boese, K., Braun, R. m., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 137:9(2026), pp. 1-11. [10.1103/xvpn-w3q9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1774086
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