Please join us Monday, March 27, 2017, as Reina Maruyama of Yale University gives her colloquium:
Astrophysical observations give overwhelming evidence for the existence of dark matter. And yet we do not know what it is. Two candidates, axions and WIMPs, are the subjects of current active research. Direct detection dark matter experiments designed to detect WIMPs have made enormous progress in the past 30 years, however no clear signal has been observed. In this context, the DAMA collaboration has asserted for over 15 years that they observe a dark matter-induced annual modulation signal. Their observation has yet to be confirmed. I will describe the current efforts in testing DAMA’s claim for detection, in particular, I will present COSINE-100 and DM-Ice. COSINE-100, a joint experiment between the DM-Ice and KIMS collaboration, is a 100-kg scale experiment capable of testing DAMA, currently in operation at the Yangyang Underground Laboratory in South Korea. DM-Ice is a low-background NaI(Tl)-based dark matter experiment aimed at understanding the DAMA signal and unambiguously testing the hypothesis of a dark-matter induced annual modulation signal. DM-Ice17, a prototype experiment consisting of 17kg of NaI(Tl) detectors, has been continuously operating at the South Pole since 2011. The status of the field, including results from DM-Ice17 and what we can expect from COSINE-100 and DM-Ice will be presented.
About the speaker
Professor Reina Maruyama is exploring new physics in nuclear and particle astrophysics, in particular, in dark matter and neutrinos. Her group is carrying out direct detection of dark matter experiments in terrestrial-based detectors 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, and CUORE, located at Gran Sasso, Italy.
Maruyama Lab website