Challenging Spontaneous Quantum Collapse with XENONnT

• URL: http://arxiv.org/abs/2506.05507v1
• Date: Thu, 05 Jun 2025 18:47:46 GMT
• Title: Challenging Spontaneous Quantum Collapse with XENONnT
• Abstract summary: We search for X-ray radiation as predicted from dynamical quantum collapse with low-energy electronic recoil data in the energy range of 1-140 keV.<n>New world-leading limits on the free parameters of the Markovian continuous spontaneous localization and Di'osi-Penrose models are set.
• Score: 0.30173675290041235
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report on the search for X-ray radiation as predicted from dynamical quantum collapse with low-energy electronic recoil data in the energy range of 1-140 keV from the first science run of the XENONnT dark matter detector. Spontaneous radiation is an unavoidable effect of dynamical collapse models, which were introduced as a possible solution to the long-standing measurement problem in quantum mechanics. The analysis utilizes a model that for the first time accounts for cancellation effects in the emitted spectrum, which arise in the X-ray range due to the opposing electron-proton charges in xenon atoms. New world-leading limits on the free parameters of the Markovian continuous spontaneous localization and Di\'osi-Penrose models are set, improving previous best constraints by two orders of magnitude and a factor of five, respectively. The original values proposed for the strength and the correlation length of the continuous spontaneous localization model are excluded experimentally for the first time.

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