English

Light Dark Matter Search with Ionization Signals in XENON1T

High Energy Physics - Experiment 2019-12-18 v2 Cosmology and Nongalactic Astrophysics

Abstract

We report constraints on light dark matter (DM) models using ionization signals in the XENON1T experiment. We mitigate backgrounds with strong event selections, rather than requiring a scintillation signal, leaving an effective exposure of (22±3)(22 \pm 3) tonne-days. Above  ⁣0.4keVee\sim\!0.4\,\mathrm{keV}_\mathrm{ee}, we observe <1event/(tonne×day×keVee)<1 \, \text{event}/(\text{tonne} \times \text{day} \times \text{keV}_\text{ee}), which is more than one thousand times lower than in similar searches with other detectors. Despite observing a higher rate at lower energies, no DM or CEvNS detection may be claimed because we cannot model all of our backgrounds. We thus exclude new regions in the parameter spaces for DM-nucleus scattering for DM masses mχm_\chi within 36GeV/c23-6\,\mathrm{GeV}/\mathrm{c}^2, DM-electron scattering for mχ>30MeV/c2m_\chi > 30\,\mathrm{MeV}/\mathrm{c}^2, and absorption of dark photons and axion-like particles for mχm_\chi within 0.1861keV/c20.186 - 1 \, \mathrm{keV}/\mathrm{c}^2.

Keywords

Cite

@article{arxiv.1907.11485,
  title  = {Light Dark Matter Search with Ionization Signals in XENON1T},
  author = {E. Aprile and J. Aalbers and F. Agostini and M. Alfonsi and L. Althueser and F. D. Amaro and V. C. Antochi and E. Angelino and F. Arneodo and D. Barge and L. Baudis and B. Bauermeister and L. Bellagamba and M. L. Benabderrahmane and T. Berger and P. A. Breur and A. Brown and E. Brown and S. Bruenner and G. Bruno and R. Budnik and C. Capelli and J. M. R. Cardoso and D. Cichon and D. Coderre and A. P. Colijn and J. Conrad and J. P. Cussonneau and M. P. Decowski and P. de Perio and A. Depoian and P. Di Gangi and A. Di Giovanni and S. Diglio and A. Elykov and G. Eurin and J. Fei and A. D. Ferella and A. Fieguth and W. Fulgione and P. Gaemers and A. Gallo Rosso and M. Galloway and F. Gao and M. Garbini and L. Grandi and Z. Greene and C. Hasterok and C. Hils and E. Hogenbirk and J. Howlett and M. Iacovacci and R. Itay and F. Joerg and S. Kazama and A. Kish and M. Kobayashi and G. Koltman and A. Kopec and H. Landsman and R. F. Lang and L. Levinson and Q. Lin and S. Lindemann and M. Lindner and F. Lombardi and J. A. M. Lopes and E. López Fune and C. Macolino and J. Mahlstedt and A. Manfredini and F. Marignetti and T. Marrodán Undagoitia and J. Masbou and S. Mastroianni and M. Messina and K. Micheneau and K. Miller and A. Molinario and K. Morå and Y. Mosbacher and M. Murra and J. Naganoma and K. Ni and U. Oberlack and K. Odgers and J. Palacio and B. Pelssers and R. Peres and J. Pienaar and V. Pizzella and G. Plante and R. Podviianiuk and J. Qin and H. Qiu and D. Ramírez García and S. Reichard and B. Riedel and A. Rocchetti and N. Rupp and J. M. F. dos Santos and G. Sartorelli and N. Šarčević and M. Scheibelhut and S. Schindler and J. Schreiner and D. Schulte and M. Schumann and L. Scotto Lavina and M. Selvi and P. Shagin and E. Shockley and M. Silva and H. Simgen and C. Therreau and D. Thers and F. Toschi and G. Trinchero and C. Tunnell and N. Upole and M. Vargas and G. Volta and O. Wack and H. Wang and Y. Wei and C. Weinheimer and D. Wenz and C. Wittweg and J. Wulf and J. Ye and Y. Zhang and T. Zhu and J. P. Zopounidis},
  journal= {arXiv preprint arXiv:1907.11485},
  year   = {2019}
}