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, observed that low-energy neutrinos interact with an argon nucleus through the weak nuclear force in a process called coherent elastic neutrino-nucleus scattering, or CEvNS, which is pronounced “sevens.” Like a ping-pong ball bombarding a softball, a neutrino that hits a nucleus transfers only a small amount of energy to the much larger nucleus, which recoils almost imperceptibly in response to the tiny assault.
Laying the groundwork for the discovery made with the argon nucleus was a 2017 studypublished in
Science in which COHERENT collaborators used the world’s smallest neutrino detector to provide the first evidence of the CEvNS process as neutrinos interacted with larger and heavier cesium and iodine nuclei. Their recoils were even tinier, like bowling balls reacting to ping-pong balls. ....

United States , South Korea , Yuri Efremenko , Kate Scholberg , Rex Tayloe , Jonghee Yoo , Jason Newby , Laboratory Directed Research , University Of Tennessee , Development Program , Office Of Science , Department Of Energy Office Science , Korea Institute For Basic Science , Indiana University , Russian Foundation For Basic Research , Alfredp Sloan Foundation , Office Of Science User Facility , Consortium For Enabling Capabilities , Office Of Science Graduate Student Research , Department Of Energy Oak Ridge National Laboratory , Duke University , Us National Science Foundation , Oak Ridge National Laboratory , Spallation Neutron Source , Science User Facility , Physical Review Letters ,