Ethan Brown

Assistant Professor, Physics, Applied Physics & Astronomy

Ethan Brown's research is in particle astrophysics, using techniques from particle physics to answer questions related to astronomy. The research uses liquid xenon detectors to probe rare physics properties in an attempt to identify the content and properties of the fundamental constituents of matter. As a member of the XENON100 and XENON1T dark matter experiments, and the nEXO neutrinoless double beta decay experiment, this research probes theories beyond the standard model of particle physics, and attempts to detect and characterize dark matter and the nature of the neutrino.


Ph.D. Physics, University of California, Los Angeles, 2010
B.S. Physics, University of California, San Diego, 2006

Research Focus
  • Direct detection of dark matter
  • Neutrinoless double beta decay
  • Experimental astroparticle physics
Select Works
  • E. Aprile, et al. (XENON Collaboration), Exclusion of Leptophilic Dark Matter Models using XENON100 Electronic Recoil Data, Science 2015 vol. 349 no. 6250 pp. 851-854
  • E. Aprile, et al. (XENON Collaboration), Search for Event Rate Modulation in XENON100 Electronic Recoil Data, Phys. Rev. Lett. 115, 091302 (2015)
  • E. Aprile, et al. (XENON Collaboration), First Axion Results from the XENON100 Experiment, Phys. Rev. D 90, 062009 (2014)
  • E. Brown et al. In situ measurements of Krypton in Xenon gas with a quadrupole mass spectrometer following a cold-trap at a temporarily reduced pumping speed, 2013_JINST_8_P02011 (2013)
  • E. Aprile et al (XENON100 Collaboration), Limits on spin-dependent WIMP-nucleon cross sections from 225 live days of XENON100 data, Phys. Rev. Lett. 111, 021301 (2013)
  • E. Aprile et al.(XENON Collaboration), Dark Matter Results from 225 Live Days of XENON100 Data, Phys. Rev. Lett. 109, 181301 (2012)
  • E. Aprile, et al.(XENON Collaboration), Implications on inelastic dark matter from 100 live days of XENON100 data, PhysRevD.84.061101
  • S. Rosendahl, et al., A novel 83mKr tracer method for characterizing xenon gas and cryogenic distillation systems, arXiv:1407.3981 [astro-ph.IM]