Search for reactor-produced millicharged particles with Skipper-CCDs at the CONNIE and Atucha-II experiments

Millicharged particles, proposed by various extensions of the standard model, can be created in pairs by high-energy photons within nuclear reactors and can interact electromagnetically with electrons in matter. Recently, the existence of a plasmon peak in the interaction cross-section with silicon...

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Veröffentlicht in:arXiv.org 2024-11
Hauptverfasser: Aguilar-Arevalo, Alexis A, Avalos, Nicolas, Bellino, Pablo, Bertou, Xavier, Bonifazi, Carla, Botti, Ana, Cababié, Mariano, Cancelo, Gustavo, Cervantes-Vergara, Brenda A, Chavez, Claudio, Chierchie, Fernando, Delgado, David, Depaoli, Eliana, D'Olivo, Juan Carlos, João dos Anjos, Estrada, Juan, Guillermo Fernandez Moroni, Fernandes Neto, Aldo R, d, Richard, Kilminster, Ben, Kuk, Kevin, Lathrop, Andrew, Lemos, Patrick, Lima, Herman P, Makler, Martin, Magnoni, Agustina, Maslova, Katherine, Marinho, Franciole, Molina, Jorge, Nasteva, Irina, Oliveira, Ana Carolina, Perez, Santiago, Paulucci, Laura, Rodrigues, Dario, Sarkis, Youssef, Sidelnik, Ivan, Miguel Sofo Haro, Stalder, Diego, Tiffenberg, Javier, Ventura, Pedro
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Sprache:eng
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Zusammenfassung:Millicharged particles, proposed by various extensions of the standard model, can be created in pairs by high-energy photons within nuclear reactors and can interact electromagnetically with electrons in matter. Recently, the existence of a plasmon peak in the interaction cross-section with silicon in the eV range was highlighted as a promising approach to enhance low-energy sensitivities. The CONNIE and Atucha-II reactor neutrino experiments utilize Skipper-CCD sensors, which enable the detection of interactions in the eV range. We present world-leading limits on the charge of millicharged particles within a mass range spanning six orders of magnitude, derived through a comprehensive analysis and the combination of data from both experiments.
ISSN:2331-8422