Carter Hall, Assc. Prof. of  Physics

     Department of Physics @ the University of Maryland, College Park

     Physical Sciences Complex Room 2114, 4696 Stadium Drive, College Park MD, 20742

     Office phone: 301-405-6103


     Experimental Nuclear Physics @ UMD

Our group's primary activities at present are the LUX and LZ dark matter searches. We also participate in a search for Majorana neutrinos with the EXO-200 experiment.

The LUX and LZ experiments

The LUX experiment is designed to investigate the basic nature of the dark matter by directly observing its constituent particles in an underground detector.  LUX is currently the most sensitive dark matter experiment of its kind, and is continuing to take data at the Sanford Underground Research Facility in Lead, SD. We are also building a new experiment known as LZ that will exceed LUX's dark matter sensitivity by about a factor of 200. LZ is expected to be operational in 2020.

The EXO-200 experiment

The EXO-200 experiment has performed one of the world's most sensitive searches for Majorana neutrinos, ruling out their existence for masses greater than ~190 to 450 meV. EXO was also the first experiment to observe the two-neutrino double beta decay of 136Xe. This process has the longest half-life of any decay ever directly observed. EXO-200 measured the half-life with an uncertainty of 2.85%, the most accurate such measurement of any two-neutrino double beta decay.


  1. D.S. Akerib, et al. [LUX collaboration], ’Results on the spin-dependent WIMP-nucleon cross section from LUX Run 3 data’, arXiv:1602.03489, submitted to Phys. Rev. Lett.

  2. D.S. Akerib, et al. [LZ collaboration], ’LUX-ZEPLIN (LZ) Conceptual Design Report ’, arXiv:1509.02910.

Ph.D Dissertations:

  1. Dr. Simon Slutsky, 'A Search for Neutrinoless Double-Beta Decay with EXO-200', 2013.
  2. Dr. Yung-Ruey Yen, 'A Search for the Double-Beta Decay of Xe-136 to an Excited State of Ba-136 with EXO-200', 2013.
  3. Dr. Clayton Davis, 'A Search for the Neutrinoless Double Beta Decay of Xenon-136 with Improved Sensitivity from Denoising', 2014.
  4. Dr. Attila Dobi, 'Measurement of the Electron Recoil Band of the LUX Dark Matter Detector With a Tritium Calibration Source', 2014.