Reina Maruyama

Reina Maruyama's picture
Associate Professor of Physics and Astronomy
Pronouns: She/her/hers
WL 209
Research Areas: 
Experimental Atomic Nuclear Particle and Astrophysics
Biographical Sketch: 

Office Hours: Tu 10:00 - 12:00/Th 14:00 - 16:30

Bio: Professor Reina Maruyama is an experimental particle/atomic/nuclear physicist. She is exploring new physics in nuclear and particle astrophysics, in particular, in dark matter and neutrinos. Her group is carrying out experiments in direct detection of dark matter with terrestrial-based detectors for both axions and WIMPs and searches for neutrinoless double beta decay. The current experiments include COSINE-100 located at the Yangyang Underground Laboratory in South Korea, DM-Ice, and IceCube located at the South Pole, CUORE, located at Gran Sasso, Italy, and HAYSTAC at Yale.

Prof. Maruyama graduated with a B.S. in Applied Physics from Columbia University in 1995. She obtained her Ph.D. in atomic physics in 2003 for atom trapping and fundamental symmetries at the University of Washington (Seattle, WA) with Norval Fortson as her advisor. She then joined Stuart Freedman’s group at the University of California, Berkeley / Lawrence Berkeley National Laboratory as a Chancellor’s Postdoctoral Fellow. There she studied Weak Interactions through beta-neutrino correlations in radioactive beta-decay of sodium-21, cooled and trapped right out of the 88-inch cyclotron. At the same time, she started carrying out a research program to search for neutrinoless double beta decay with CUORICINO and CUORE Experiments. She continued her research with double beta decay as a research scientist at the University of Wisconsin–Madison, where she joined IceCube, a neutrino telescope located at the South Pole, and created DM-Ice, a dark matter detector also at the South Pole. She joined the faculty at UW-Madison in 2011. She joined the faculty at Yale as an assistant professor in 2013 and tenured at Yale in 2016.

She is an author of 200+ publications and has presented her work in numerous conferences and workshops. She is often quoted in popular science press such as APS News, Nature News, Science News, and Symmetry Magazine for her work on dark matter and neutrinoless double beta decay.


Ph.D., University of Washington, Seattle, 2003

Honors & Awards: 

She is the recipient of several awards, including Sloan Research Fellowship, NSF CAREER Award, Yale Public Voices Fellowship, and Woman Physicist of the Month from CSWP. 

Selected Publications: 

For an expanded list of publications, please see,