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arxiv: 2411.15289 · v2 · pith:LIMCJ5Q4new · submitted 2024-11-22 · ✦ hep-ex

Search for Light Dark Matter in Low-Energy Ionization Signals from XENONnT

E. Aprile , J. Aalbers , K. Abe , S. Ahmed Maouloud , L. Althueser , B. Andrieu , E. Angelino , D. Ant\'on Martin
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F. Arneodo L. Baudis M. Bazyk L. Bellagamba R. Biondi A. Bismark K. Boese A. Brown G. Bruno R. Budnik C. Cai C. Capelli J. M. R. Cardoso A. P. Cimental Ch\'avez A. P. Colijn J. Conrad J. J. Cuenca-Garc\'ia V. D'Andrea L. C. Daniel Garcia M. P. Decowski A. Deisting C. Di Donato P. Di Gangi S. Diglio K. Eitel S. el Morabit A. Elykov A. D. Ferella C. Ferrari H. Fischer T. Flehmke M. Flierman W. Fulgione C. Fuselli P. Gaemers R. Gaior M. Galloway F. Gao S. Ghosh R. Giacomobono R. Glade-Beucke L. Grandi J. Grigat H. Guan M. Guida P. Gyorgy R. Hammann A. Higuera C. Hils L. Hoetzsch N. F. Hood M. Iacovacci Y. Itow J. Jakob F. Joerg Y. Kaminaga M. Kara P. Kavrigin S. Kazama M. Kobayashi D. Koke A. Kopec H. Landsman R. F. Lang L. Levinson I. Li S. Li S. Liang Y.-T. Lin S. Lindemann M. Lindner K. Liu M. Liu J. Loizeau F. Lombardi J. Long J. A. M. Lopes T. Luce Y. Ma C. Macolino J. Mahlstedt A. Mancuso L. Manenti F. Marignetti T. Marrod\'an Undagoitia K. Martens J. Masbou E. Masson S. Mastroianni A. Melchiorre J. Merz M. Messina A. Michael K. Miuchi A. Molinario S. Moriyama K. Mor{\aa} Y. Mosbacher M. Murra J. M\"uller K. Ni U. Oberlack B. Paetsch Y. Pan Q. Pellegrini R. Peres C. Peters J. Pienaar M. Pierre G. Plante T. R. Pollmann L. Principe J. Qi J. Qin D. Ram\'irez Garc\'ia M. Rajado R. Singh L. Sanchez J. M. F. dos Santos I. Sarnoff G. Sartorelli J. Schreiner P. Schulte H. Schulze Ei{\ss}ing M. Schumann L. Scotto Lavina M. Selvi F. Semeria P. Shagin S. Shi J. Shi M. Silva H. Simgen C. Szyszka A. Takeda P.-L. Tan D. Thers F. Toschi G. Trinchero C. D. Tunnell F. T\"onnies K. Valerius S. Vecchi S. Vetter F. I. Villazon Solar G. Volta C. Weinheimer M. Weiss D. Wenz C. Wittweg V. H. S. Wu Y. Xing D. Xu Z. Xu M. Yamashita L. Yang J. Ye L. Yuan G. Zavattini M. Zhong
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classification ✦ hep-ex
keywords darkmatterheavylightlimitsmatter-electronmediatorsearch
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We report on a blinded search for dark matter with single- and few-electron signals in the first science run of XENONnT relying on a novel detector response framework that is physics-model-dependent. We derive 90\% confidence upper limits for dark matter-electron interactions. Heavy and light mediator cases are considered for the standard halo model and dark matter up-scattered in the Sun. We set stringent new limits on dark matter-electron scattering via a heavy mediator with a mass within 10-20\,MeV/$c^2$ and electron absorption of axion-like particles and dark photons for $m_\chi$ below 0.186\,keV/$c^2$.

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