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Granular Aluminum Parametric Amplifier for Low-Noise Measurements in Tesla Fields

Physical Review Letters 2024年第26期133卷 260604-260604页

作者： Nicolas Zapata Ivan Takmakov Simon Günzler Simon Geisert Soeren Ihssen Mitchell Field Ameya Nambisan Dennis Rieger Thomas Reisinger IQMT Karlsruhe Institute of Technology 76131 Karlsruhe Germany PHI Karlsruhe Institute of Technology 76131 Karlsruhe Germany Present address: IQM Quantum Computers Espoo 02150 Finland.

Josephson junction parametric amplifiers have become essential tools for microwave quantum circuit readout with minimal added noise. Even after improving at an impressive rate in the past decade, they remain vulnerable to magnetic fields, which limits their use in many applications such as spin qubits, Andreev and molecular magnet devices, dark matter searches, etc. Kinetic inductance materials, such as granular aluminum (grAl), offer an alternative source of nonlinearity with innate magnetic field resilience. We present a nondegenerate amplifier made of two coupled grAl resonators resilient to in-plane magnetic fields up to 1T. It offers 20 dB of gain close to the quantum limit of added noise, with a gain-bandwidth product of 28 MHz and −110 dBm input saturation power.

关键词： Parametric amplifiers

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Highly Luminescent Positively Charged Quantum Dots Interacting with Proteins and Cells

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Chinese Journal of Chemistry 2022年第22期40卷 2685-2693页

作者： Haixia Wang Karin Nienhaus Li Shang Gerd Ulrich Nienhaus Institute of Applied Physics Karlsruhe Institute of Technology(KIT)76131 KarlsruheGermany Institute of Nanotechnology Karlsruhe Institute of Technology(KIT)76344 Eggenstein-LeopoldshafenGermany InstituteofBiologicaland Chemical Systems Karlsruhe Institute of Technology(KIT)76344 Eggenstein-LeopoldshafenGermany Department of Physics University of llinois at Urbana-ChampaignUrbanaIL61801USA Present address:Laboratory of Biomaterials and Translational Medicine Center for NanomedicineThe Third Affiliated HospitalSun Yat-sen UniversityGuangzhou510630China Present address:School of Materials Science and Engineering Northwestern PolytechnicalUniversityXi'an 710072China

We have studied interactions between positively charged MUTAB-stabilized quantum dots(QDs)and model proteins,serum and live cells using fluorescence correlation spectroscopy(FCS),dynamic light scattering(DLS),time-resolved photoluminescence(PL)and live-cell fluorescence *** human serum albumin(HSA)as a model protein,we measured the growth of a protein adsorption layer(“protein corona”)via time-resolved *** formation was characterized by an apparent equilibrium dissociation coefficient,KD≈10μ*** adlayer growth was surprisingly slow(timescale ca.30 min),in stark contrast to many similar measurements with HSA and other proteins and different ***-resolved PL data revealed a characteristic quenching behavior depending on the QD surface coverage with *** together,we found that MUTAB-QDs initially bind HSA molecules weakly(KD≈700μM);however,the affinity is enhanced over time,presumably due to proton injection into the MUTAB layer by HSA triggering ligand *** process was also observed with human blood serum,showing equal kinetics for comparable HSA ***,imaging experiments with cultured human cells(HeLa)revealed that MUTAB-QDs bind to the cell membrane and perforate *** process is reduced upon pre-adsorption of proteins on the MUTAB-QD.

关键词： Quantum dots Nanoparticles Agglomeration Protein adsorption Quantitative fluorescence microscopy

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Erratum to: Search for PeVatrons at the Galactic Center using a radio air-shower array at the South Pole

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The European Physical Journal C 2021年第5期81卷 1-3页

作者： V., A. Balagopal Haungs, A. Huege, T. Schröder, F. G. Institut für Experimentelle Teilchenphysik Karlsruhe Institute of Technology (KIT) Karlsruhe Germany Present address: Wisconsin IceCube Particle Astrophysics Center Universityof Wisconsin -Madison USA Institut für Kernphysik Karlsruhe Institute of Technology (KIT) Karlsruhe Germany

A Correction to this paper has been published: https://***/10.1140/epjc/s10052-018-5537-2

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Soft phonon and the central peak at the cubic-to-tetragonal phase transition in SrTiO3

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Physical Review B 2025年第13期111卷 134108-134108页

作者： Avishek Maity Klaus Habicht Michael Merz Ayman H. Said Christo Guguschev Danny Kojda Britta Ryll Jan-Ekkehard Hoffmann Andrea Dittmar Heinz Maier-Leibnitz Zentrum (MLZ) Technische Universität München D-85747 Garching Germany Present address: Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA. Department Dynamics and Transport in Quantum Materials Helmholtz-Zentrum Berlin für Materialien und Energie Hahn-Meitner-Platz 1 D-14109 Berlin Germany Institut für Physik und Astronomie Universität Potsdam Karl-Liebknecht-Straße 24-25 D-14476 Potsdam Germany Institute for Quantum Materials and Technologies Karlsruhe Institute of Technology Kaiserstr. 12 D-76131 Karlsruhe Germany Karlsruhe Nano Micro Facility (KNMFi) Karlsruhe Institute of Technology Kaiserstr. 12 D-76131 Karlsruhe Germany Advanced Photon Source Argonne National Laboratory Lemont Illinois 60439 USA Leibniz-Institut für Kristallzüchtung Max-Born-Straße 2 D-12489 Berlin Germany

The continuous displacive phase transition in SrTiO3 near Tc≈105 K features a central elastic peak in neutron-scattering investigations at temperatures above Tc, i.e., before the corresponding soft phonon mode is overdamped upon cooling. The origin of this central peak is still not understood. Here, we report an inelastic x-ray scattering investigation of the cubic-to-tetragonal phase transition in SrTiO3. We compare quantitatively measurements of the soft phonon mode on two differently grown samples and discuss the findings regarding results from thermodynamic and transport probes such as specific heat and thermal conductivity. Furthermore, we use inelastic x-ray scattering to perform elastic scans with both high momentum and milli-electronvolt energy-resolution and, thus, are able to separate elastic intensities of the central peak from low-energy quasielastic phonon scattering. Our results indicate that the evolution of the soft mode is similar in both samples though the intensities of the central peak differ by a factor of four. Measurements revealing anisotropic correlation lengths on cooling towards Tc, indicate that local properties of the crystals to which collective lattice excitations are insensitive are likely at the origin of the central elastic line in SrTiO3.

关键词： X ray scattering

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Search for inelastic boosted dark matter with the ICARUS detector at the Gran Sasso Underground National Laboratory

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Physical Review D 2025年第9期111卷 092003-092003页

作者： H. Carranza J. Yu B. Brown S. Blanchard S. Chakraborty R. Raut D. Kim M. Antonello B. Baibussinov V. Bellini P. Benetti F. Boffelli M. Bonesini A. Bubak E. Calligarich S. Centro A. Cesana K. Cieslik A. G. Cocco A. Dabrowska A. Dermenev A. Falcone C. Farnese A. Fava A. Ferrari D. Gibin S. Gninenko A. Guglielmi J. Holeczek M. Janik M. Kirsanov J. Kisiel I. Kochanek J. Lagoda A. Menegolli G. Meng C. Montanari S. Otwinowski C. Petta F. Pietropaolo A. Rappoldi G. L. Raselli M. Rossella C. Rubbia P. Sala A. Scaramelli F. Sergiampietri D. Stefan M. Szarska M. Terrani M. Torti F. Tortorici F. Varanini S. Ventura C. Vignoli H. Wang X. Yang A. Zalewska A. Zani K. Zaremba Department of Physics The University of Texas Arlington Texas 76019 USA Department of Physics The University of South Dakota Vermillion South Dakota 57069 USA INFN—Laboratori Nazionali del Gran Sasso Assergi Italy Dipartimento di Fisica e Astronomia Università di Padova and INFN Padova Italy Dipartimento di Fisica e Astronomia Università di Catania and INFN Catania Italy Dipartimento di Fisica Università di Pavia and INFN Pavia Italy Dipartimento di Fisica Università di Milano Bicocca and INFN Milano Italy Institute of Physics University of Silesia Katowice Poland Dipartimento di Fisica Università di Milano and INFN Milano Italy H. Niewodniczanski Institute of Nuclear Physics Polish Academy of Science Krakow Poland INR RAS Moscow Russia Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Institute of Astroparticle Physics Karlsruhe Institute of Technology Karlsruhe (KIT) Germany Institute for Beam Physics and Technology Karlsruhe Institute of Technology (KIT) Karlsruhe Germany National Centre for Nuclear Research Otwock/Swierk Poland On leave of absence from INFN Pavia Pavia Italy Department of Physics and Astronomy UCLA Los Angeles CA90095 California USA CERN European Organization for Nuclear Research 1211 Geneva 23 Switzerland On leave of absence from INFN Padova Padova Italy GSSI L’Aquila Italy Present address: Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Present address: IPSI-INAF Torino Torino Italy Institute of Radio Electronics Warsaw University of Technology Warsaw Poland

We present the result of a search for inelastic boosted dark matter using the data corresponding to an exposure of 0.13 kton·year, collected by the ICARUS T-600 detector during its 2012–2013 operational period at the INFN Gran Sasso Underground National Laboratory. The benchmark boosted dark matter model features a multiparticle dark sector with a U(1)′ gauge boson, the dark photon. The kinetic mixing of the dark photon with the Standard Model photon allows for a portal between the dark sector and the visible sector. The inelastic boosted dark matter interaction occurs when a dark matter particle inelastically scatters with an electron in the ICARUS detector, producing an outgoing, heavier dark sector state which subsequently decays back down to the dark matter particle, emitting a dark photon. The dark photon subsequently couples to a Standard Model photon through kinetic mixing. The Standard Model photon then converts to an electron-positron pair in the detector. This interaction process provides a distinct experimental signature that consists of a recoil electron from the primary interaction and an associated electron-positron pair from the secondary vertex. After analyzing 4,134 triggered events, the search results in zero observed events. Exclusion limits are set in the dark photon mass and coupling (mX,ε) parameter space for several selected optimal boosted dark matter mass sets and cover previously unexplored parameter space.

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Proof-of-principle demonstration of a pilot bunch comagnetometer in a stored beam

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Physical Review Research 2025年第2期7卷 023257-023257页

作者： J. Slim F. Rathmann A. Andres V. Hejny A. Nass A. Kacharava P. Lenisa N. N. Nikolaev J. Pretz A. Saleev V. Shmakova H. Soltner F. Abusaif A. Aggarwal A. Aksentev B. Alberdi L. Barion I. Bekman M. Beyß C. Böhme B. Breitkreutz N. Canale G. Ciullo S. Dymov N.-O. Fröhlich R. Gebel M. Gaisser K. Grigoryev D. Grzonka J. Hetzel O. Javakhishvili V. Kamerdzhiev S. Karanth I. Keshelashvili A. Kononov K. Laihem A. Lehrach N. Lomidze B. Lorentz G. Macharashvili A. Magiera D. Mchedlishvili A. Melnikov F. Müller A. Pesce V. Poncza D. Prasuhn D. Shergelashvili N. Shurkhno S. Siddique A. Silenko R. Stassen E. J. Stephenson H. Ströher M. Tabidze G. Tagliente Y. Valdau M. Vitz T. Wagner A. Wirzba A. Wrońska P. Wüstner M. Żurek III. Physikalisches Institut B RWTH Aachen University 52056 Aachen Germany Present address: Deutsches Elektronen-Synchrotron 22607 Hamburg Germany. Institut für Kernphysik Forschungszentrum Jülich 52425 Jülich Germany Present address: Brookhaven National Laboratory Upton New York 11973 USA. University of Ferrara and Istituto Nazionale di Fisica Nucleare 44100 Ferrara Italy L.D. Landau Institute for Theoretical Physics 142432 Chernogolovka Russia Present address: N.N. Bogoliubov Laboratory of Theoretical Physics 141980 Dubna Russia. Present address: Institute for a Sustainable Hydrogen Economy Forschungszentrum Jülich 52428 Jülich Germany. Institute of Technology and Engineering Forschungszentrum Jülich 52425 Jülich Germany Present address: Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen Germany. Marian Smoluchowski Institute of Physics Jagiellonian University 30348 Cracow Poland Institute for Nuclear Research Russian Academy of Sciences 117312 Moscow Russia Present address: Humboldt-Universität zu Berlin Institut für Physik 12489 Berlin Germany. Present address: Institute of Technology and Engineering Forschungszentrum Jülich Jülich Germany. Present address: GSI Helmholtz Centre for Heavy Ion Research 64291 Darmstadt Germany. Department of Electrical and Computer Engineering Agricultural University of Georgia 0159 Tbilisi Georgia Present address: H. Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences 31-342 Kraków Poland. High Energy Physics Institute Tbilisi State University 0186 Tbilisi Georgia GSI Helmholtzzentrum für Schwerionenforschung 64291 Darmstadt Germany Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research 141980 Dubna Russia Indiana University Department of Physics Bloomington Indiana 47405 USA Istituto Nazionale di Fisica Nucleare sez. Bari 70125 Bari Italy Institute for Advanced Simulation Forschungszentrum Jülich 52425 Jülich Germany Zentralinstitut für Engineering Elekt

In polarization experiments at storage rings, one of the challenges is to maintain the spin-resonance condition of a radio-frequency spin rotator with the spin precessions of the orbiting particles. Time-dependent variations of the magnetic fields of ring elements lead to unwanted variations of the spin-precession frequency. We report here on a solution to this problem by shielding (or masking) one of the bunches stored in the ring from the high-frequency fields of the spin rotator, so that the masked pilot bunch acts as a comagnetometer for the other signal bunch, tracking fluctuations in the ring on a time scale of about one second. While the new method was developed primarily for searches of electric dipole moments of charged particles, it may have far-reaching implications for future spin physics facilities, such as the EIC and NICA.

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Maintaining a resonance condition of an rf spin rotator through a feedback loop in a storage ring

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Physical Review Accelerators and Beams 2025年第6期28卷 062801-062801页

作者： V. Hejny A. Andres J. Pretz F. Abusaif A. Aggarwal A. Aksentev B. Alberdi L. Barion I. Bekman M. Beyß C. Böhme B. Breitkreutz N. Canale G. Ciullo S. Dymov N.-O. Fröhlich R. Gebel M. Gaisser K. Grigoryev D. Grzonka J. Hetzel O. Javakhishvili A. Kacharava V. Kamerdzhiev S. Karanth I. Keshelashvili A. Kononov K. Laihem A. Lehrach P. Lenisa N. Lomidze B. Lorentz G. Macharashvili A. Magiera D. Mchedlishvili A. Melnikov F. Müller A. Nass N. N. Nikolaev D. Okropiridze A. Pesce A. Piccoli V. Poncza D. Prasuhn F. Rathmann A. Saleev D. Shergelashvili V. Shmakova R. Shankar N. Shurkhno S. Siddique A. Silenko J. Slim H. Soltner R. Stassen E. J. Stephenson H. Ströher M. Tabidze G. Tagliente Y. Valdau M. Vitz T. Wagner A. Wirzba A. Wrońska P. Wüstner M. Żurek Institut für Kernphysik Forschungszentrum Jülich 52425 Jülich Germany III. Physikalisches Institut B RWTH Aachen University 52056 Aachen Germany Present address: GSI Helmholtzzentrum für Schwerionenforschung GmbH Planckstr. 1 64291 Darmstadt Germany. Present address: Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany. Marian Smoluchowski Institute of Physics Jagiellonian University 30348 Cracow Poland Institute for Nuclear Research Russian Academy of Sciences 117312 Moscow Russia Present address: Humboldt-Universität zu Berlin Institut für Physik Newton-StraSSe 15 12489 Berlin Germany. University of Ferrara and Istituto Nazionale di Fisica Nucleare 44100 Ferrara Italy Present address: Institute of Technology and Engineering Forschungszentrum Jülich 52425 Jülich Germany. Present address: Deutsches Elektronen-Synchrotron 22607 Hamburg Germany. Department of Electrical and Computer Engineering Agricultural University of Georgia 0159 Tbilisi Georgia Present address: Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague 160 00 Praha 6 Czech Republic. High Energy Physics Institute Tbilisi State University 0186 Tbilisi Georgia GSI Helmholtzzentrum für Schwerionenforschung GmbH Planckstraße 1 64291 Darmstadt Germany L.D. Landau Institute for Theoretical Physics 142432 Chernogolovka Russia Present address: Ruhr-Universität Bochum Institut für Experimentalphysik I 44801 Bochum Germany. Present address: Brookhaven National Laboratory Upton NY 11973 USA. Present address: Institut für nachhaltige Wasserstoffwirtschaft Forschungszentrum Jülich 52425 Jülich Germany. Bogoliubov Laboratory of Theoretical Physics International Intergovernmental Organization Joint Institute for Nuclear Research 141980 Dubna Russia Institute of Technology and Engineering Forschungszentrum Jülich 52425 Jülich Germany Indiana University Department of Physics Bloomington Indiana 47405 USA and Department of

This paper presents the successful application of a phase-lock feedback system to maintain the resonance condition of a radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect to a 120 kHz spin precession in the Cooler Synchrotron (COSY) storage ring. Real-time monitoring of the spin precession and the rf Wien filter signal allows the relative phase between the two to be stabilized at an arbitrary setpoint. The feedback system compensates for deviations in the relative phase by adjusting the frequency and/or phase of the rf device as needed. With this method, a variation in the phase relative to the demanded value with a standard deviation of σΔφ≈0.2 rad could be achieved. The system was implemented in two runs aiming at a first direct measurement of the deuteron electric dipole moment in 2018 and 2021. In addition, the difference between a single-bunch beam affected by the spin rotator and a two-bunch system in which only one bunch is exposed to the spin rotator fields is discussed. Both methods have been used during these beam times. The ability to keep the spin precession and the rf fields synchronized is crucial for future investigations of electric dipole moments of charged particles using storage rings.

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Photon Upconversion Cooperates with Downshifting in Chiral Systems: Modulation, Amplification, and Applications of Circularly Polarized Luminescence

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Angewandte Chemie 2024年第27期136卷

作者： Dr. Tonghan Zhao Prof. Pengfei Duan CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST) No.11 ZhongGuanCun BeiYiTiao Beijing 100190 P.R. China Present address T. Zhao Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany University of Chinese Academy of Sciences No.1 Yanqihu East Rd Huairou District Beijing 100049 P. R. China

Circularly polarized luminescence (CPL)-active materials are increasingly recognized for their potential applications such as 3D imaging, data storage, and optoelectronic devices. Typically, CPL materials have required high-energy (HE) photons for excitation to emit low-energy (LE) circularly polarized light, a process known as downshifting CPL (DSCPL). However, the emergence of upconverted CPL (UCCPL), where the absorption of multi LE photons results in the emission of a single HE photon with circular polarization, has recently attracted considerable attention. This minireview highlights the intricate relationship between upconversion and CPL phenomena. During upconversion, the dissymmetry factor ( g lum ) value can be improved in certain systems. Additionally, the integration of both LE and HE photons in upconversion-downshifting-synergistic systems offers avenues for dual-excitation or dual-emission CPL functionalities. More in detail, the emerging UCCPL based on various photon upconversion mechanisms and their synergy with DSCPL are introduced. Additionally, several examples that demonstrate the applications of UCCPL are presented to highlight the future opportunities.

关键词： Circularly polarized luminescence Chirality Upconversion Host-guest Energy transfer

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Cover Feature: LiNi0.5Mn1.5O4Thin Films Grown by Magnetron Sputtering under Inert Gas Flow Mixtures as High-Voltage Cathode Materials for Lithium-Ion Batteries (ChemElectroChem 3/2023)

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ChemElectroChem 2023年第3期10卷

作者： Dr. Hamideh Darjazi Dr. Iñaki Madinabeitia Dr. Maider Zarrabeitia Dr. Elena Gonzalo Begoña Acebedo Dr. S. Javad Rezvani Dr. Francisco José Fernández-Carretero Dr. Francesco Nobili Dr. Alberto García-Luis Dr. Miguel Ángel Muñoz-Márquez School of Science and Technology - Chemistry Division University of Camerino Via Madonna delle Carceri ChIP 62032 Camerino Italy Centre for Cooperative Research on Alternative Energies (CIC energiGUNE) Basque Research and Technology Alliance (BRTA) Alava Technology Park Albert Einstein 48 01510 Vitoria-Gasteiz Spain Departamento de Física de la Materia Condensada Facultad de Ciencia y Tecnología Universidad del País Vasco UPV/EHU P.O. Box 644 48080 Bilbao Spain TECNALIA Basque Research and Technology Alliance (BRTA) Parque Científico y Tecnológico de Gipuzkoa Mikeletegi Pasealekua 2 20009 Donostia-San Sebastián Spain Present address Helmholtz Institute Ulm (HIU) Helmholtzstrasse 11 89081 Ulm Germany Present address Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany School of Science and Technology - Physics Division University of Camerino Via Madonna delle Carceri 9B 62032 Camerino Italy GISEL-Centro di Riferimento Nazionale per i Sistemi di Accumulo Elettrochimico di Energia INSTM via G. Giusti 9 50121 Firenze Italy

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

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Physical Review Letters 2025年第16期134卷 161004-161004页

作者： E. Aprile J. Aalbers K. Abe S. Ahmed Maouloud L. Althueser B. Andrieu E. Angelino D. Antón Martin 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 Chávez A. P. Colijn J. Conrad J. J. Cuenca-García 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. Marrodán Undagoitia K. Martens J. Masbou E. Masson S. Mastroianni A. Melchiorre J. Merz M. Messina A. Michael K. Miuchi A. Molinario S. Moriyama K. Morå Y. Mosbacher M. Murra J. Müller 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. Ramírez García M. Rajado R. Singh L. Sanchez J. M. F. dos Santos I. Sarnoff G. Sartorelli J. Schreiner P. Schulte H. Schulze Eißing 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. Tönnies 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 Physics Department Columbia University New York New York 10027 USA Nikhef and The University of Groningen Van Swinderen Institute 9747AG Groningen Netherlands Kamioka Observatory Institute for Cosmic Ray Research and Kavli Institute for the Physics and Mathematics of the Universe (WPI) University of Tokyo Higashi-Mozumi Kamioka Hida Gifu 506-1205 Japan LPNHE Sorbonne Université CNRS/IN2P3 75005 Paris France Institut für Kernphysik University of Münster 48149 Münster Germany INAF-Astrophysical Observatory of Torino Department of Physics University of Torino and INFN-Torino 10125 Torino Italy INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute 67100 L’Aquila Italy Department of Physics Enrico Fermi Institute and Kavli Institute for Cosmological Physics University of Chicago Chicago Illinois 60637 USA New York University Abu Dhabi—Center for Astro Particle and Planetary Physics Abu Dhabi United Arab Emirates Physik-Institut University of Zürich 8057 Zürich Switzerland SUBATECH IMT Atlantique CNRS/IN2P3 Nantes Université Nantes 44307 France Department of Physics and Astronomy University of Bologna and INFN-Bologna 40126 Bologna Italy Max-Planck-Institut für Kernphysik 69117 Heidelberg Germany Physikalisches Institut Universität Freiburg 79104 Freiburg Germany Department of Particle Physics and Astrophysics Weizmann Institute of Science Rehovot 7610001 Israel Department of Physics and Center for High Energy Physics Tsinghua University Beijing 100084 People’s Republic of China LIBPhys Department of Physics University of Coimbra 3004-516 Coimbra Portugal Nikhef and The University of Amsterdam Science Park 1098XG Amsterdam Netherlands Oskar Klein Centre Department of Physics Stockholm University AlbaNova Stockholm SE-10691 Sweden Also at INFN-Roma Tre 00146 Roma Italy. Institut für Physik and Exzellenzcluster PRISMA Johannes Gutenberg-Universität Mainz 55099 Mainz Germany Department of Physics and Chemistry University of L’A

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/c2 and electron absorption of axionlike particles and dark photons for mχ below 0.03 keV/c2.

关键词： Electron scattering

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