• Corpus ID: 219721404

Observation of Excess Electronic Recoil Events in XENON1T

@article{Aprile2020ObservationOE,
  title={Observation of Excess Electronic Recoil Events in XENON1T},
  author={Elena Aprile and J. Aalbers and F. Agostini and Matteo Alfonsi and L. Althueser and Fernando Domingues Amaro and Vasile Cristian Antochi and E. Angelino and J. R. Angevaare and Francesco Arneodo and Derek Barge and L. Baudis and Boris Bauermeister and Lorenzo Bellagamba and Mohamed Lotfi Benabderrahmane and Thomas Berger and A. M. Brown and Ethan Brown and S. Bruenner and Gianmarco Bruno and Ranny Budnik and Chiara Capelli and Jo{\~a}o M. R. Cardoso and Dominick Cichon and B. Cimmino and Michael Clark and Daniel Coderre and Auke-Pieter Colijn and Jan Conrad and J. P. Cussonneau and M. P. Decowski and Amanda Depoian and Pietro Di Gangi and Adriano Di Giovanni and Roberto Di Stefano and Sara Diglio and A. Elykov and Guillaume Eurin and Alfredo D. Ferella and Walter Fulgione and P. W. Gaemers and Romain Gaior and Michelle Galloway and F. Gao and Luca Grandi and Constanze Hasterok and C. M. Hils and Katsuki Hiraide and L. Hoetzsch and Joseph Howlett and Michele Iacovacci and Yoshitaka Itow and F. Joerg and N. Kato and Shingo Kazama and M. Kobayashi and G. Koltman and Abigail Kopec and Hagar Landsman and Rafael F. Lang and Lorne Levinson and Q. Lin and Sebastian Lindemann and Manfred Lindner and Francesco Lombardi and J. Long and Jos{\'e} A. M. Lopes and Ernesto L'opez Fune and Carla Macolino and J. Mahlstedt and A. Mancuso and L. Manenti and Alessandro Manfredini and Fabrizio Marignetti and Teresa Marrod'an Undagoitia and Kai Martens and Julien Masbou and Darryl Masson and Stefano Mastroianni and Marcello Messina and Kentaro Miuchi and Kei Mizukoshi and Andrea Molinario and Knut Dundas Moraa and S. Moriyama and Yossi Mosbacher and Michael Murra and Junji Naganoma and Kaixiang Ni and Uwe G. Oberlack and Kelly Odgers and Joaquim Palacio and Bart Pelssers and R. Peres and Jacques L. Pienaar and V. Pizzella and Guillaume Plante and J Qin and Hao Qiu and D. Ram'irez Garc'ia and Shayne Reichard and A. Rocchetti and Natascha Rupp and J. M. F. Santos and Gabriella Sartorelli and N. vSarvcevi'c and M. Scheibelhut and Jochen Schreiner and Daniel Schulte and Marc Schumann and Luca Scotto Lavina and Marco Selvi and F. Semeria and Peter Shagin and Evan Shockley and M. Silva and Hardy Simgen and Atsushi Takeda and C. Therreau and D. Thers and Francesco Toschi and G. C. Trinchero and Christopher Tunnell and M. A. Vargas and Giuseppe Volta and H. G. Wang and Y. Wei and Christian Weinheimer and M. Weiss and Daniel Wenz and Christian Wittweg and Z. Xu and Michiru Yamashita and J. Ye and Guido Zavattini and Yalin. Zhang and T. Zhu and J. P. Zopounidis and Xavier Mougeot},
  journal={arXiv: High Energy Physics - Experiment},
  year={2020}
}
We report results from searches for new physics with low-energy electronic recoil data recorded with the XENON1T detector, with an exposure of 0.65 t-y and an unprecedentedly low background rate of $76 \pm 2_{stat}$ events/(t y keV) between 1-30 keV. An excess over known backgrounds is observed below 7 keV, rising towards lower energies and prominent between 2-3 keV. The solar axion model has a 3.5$\sigma$ significance, and a three-dimensional 90% confidence surface is reported for axion… 
Systematics in the XENON1T data: The 15-keV anti-axion
The XENON1T collaboration has found an excess of electron recoil events in their Science Run 1 data below ~7 keV with a spectral shape consistent with that expected from a solar-axion-induced signal.
Exploring new physics with O(keV) electron recoils in direct detection experiments
Motivated by the recent XENON1T results, we explore various new physics models that can be discovered through searches for electron recoils in O $$ \mathcal{O} $$ (keV)-threshold direct-detection
Gauged Lepton Number and Cosmic-ray Boosted Dark Matter for the XENON1T Excess
The recently reported excess in XENON1T is explained by two scenarios with and without a dark matter interaction with the gauged lepton number, $U(1)_{L_e-L_i}$, $i=\mu$ or $\tau$. In Scenario#1, the
Carbon $^{14}$C as a possible background source in XENON1T
In this work, carbon $^{14}$C was considered as a possible background source in the XENON1T experiment. The simulation results show that if $^{14}$C is located in dust particles with a characteristic
Millicharged cosmic rays and low recoil detectors
We consider the production of a "fast flux" of hypothetical millicharged particles (mCPs) in the interstellar medium (ISM). We consider two possible sources induced by cosmic rays: (a)
A ug 2 02 0 Investigating the XENON 1 T Low-Energy Electronic Recoil Excess Using NEST
The search for dark matter, the missing mass of the universe, is one of the most active fields of study within particle physics. The XENON1T experiment recently observed a 3.5σ excess potentially
What if ALP dark matter for the XENON1T excess is the inflaton
The recent XENON1T excess in the electron recoil data can be explained by anomaly-free axion-like particle (ALP) dark matter with mass $m_\phi = 2.3 \pm 0.2\,$keV and the decay constant $f_\phi/q_e
Event Rates for the Scattering of Weakly Interacting Massive Particles from 23Na and 40Ar
Detection rates for the elastic and inelastic scattering of weakly interacting massive particles (WIMP) off $^{23}$Na are calculated within the framework of Deformed Shell Model (DSM) based on
EFT approach of inelastic dark matter for Xenon electron recoil detection
Measuring dark matter (DM) signals via electron recoil provides an important means for direct detection of light DM particles. The recent XENON1T anomaly with electron recoil energy around ER = (2–3)
Sources of Low-Energy Events in Low-Threshold Dark Matter Detectors
We discuss several low-energy backgrounds to sub-GeV dark matter searches, which arise from high-energy particles of cosmic or radioactive origin that interact with detector materials. We focus on
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 120 REFERENCES
Gas Purity Analytics, Calibration Studies, and Background Predictions towards the First Results of XENON1T
The XENON1T experiment aims at the direct detection of the well motivated dark matter candidate of weakly interacting massive particles (WIMPs) scattering off xenon nuclei. The first science run of
Nuclear data sheets for A = 107
TLDR
The main data have been summarized and used to construct level and decay schemes and might serve as a basis for choosing definitive experiments that would augment the knowledge of nuclei in this mass chain.
Nuclear data sheets for A = 112
Abstract The 1960 version of the Nuclear Data Sheets for A = 112 has been revised on the basis of experimental data received before September 1971. Experimental data from ≈75 papers, comparisons with
Nuclear data sheets for A = 110
Abstract The 1992 evaluation on mass A = 110 has been revised, taking into account all data available before January 1999. Detailed experimental information is presented from the neutron rich nucleus
Evaluated Nuclear Structure Data File (ENSDF)
TLDR
The ENSDF provides evaluated experimental nuclear structure and decay data for basic and applied research and the activities of the NSDD network, the publication of the evaluations, and their use in different applications are described.
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
“A and B”:
Direct fabrication of large micropatterned single crystals. p1205 21 Feb 2003. (news): Academy plucks best biophysicists from a sea of mediocrity. p994 14 Feb 2003.
日本原子力学会誌および欧文論文誌(Journal of Nuclear Science and Technology)の改革案
Associate Editors: Hiroshi Akie, Japan Atomic Energy Agency, Japan Miyuki Akiba, Toshiba Corporation, Japan Mariko Atarashi-Andoh, Japan Atomic Energy Agency, Japan Go Chiba, Hokkaido University,
'I.
TLDR
Patients emphasised 'having more energy' when reporting improvements in their physical health following treatment and their desire to help other patients to receive treatment was connected to their experience of the services that they received and their perceived health outcomes.
...
1
2
3
4
5
...