The secret to measuring the energy of an antineutrino

Scientists at Fermilab use the MINERvA to make measurements of neutrino interactions that can support the work of other neutrino experiments. Photo: Reidar Hahn

Scientists study tiny particles called neutrinos to learn about how our universe evolved. These particles, well-known for being tough to detect, could tell the story of how matter won out over antimatter a fraction of a second after the Big Bang and, consequently, why we’re here at all.

The secret to measuring an antineutrino’s energy

Miranda Elkins (left) worked on this with Rik Gran (right) while she was a master’s student at the University of Minnesota-Duluth. She is now a Ph.D. student at Iowa State University.

It is no secret that neutrinos change flavor or oscillate as they travel from one place to another, and that the amount they change depends on how much time they have to change. This time is directly related to the distance the neutrino traveled and the energy of the neutrino itself. Measuring the distance is easy. The hard part is measuring the neutrino energy.

Read the entire article at the Fermilab web site: