US-Japan researchers unlock new secrets about universe’s ghostly neutrinos

For years, scientists have been struggling to understand the elusive nature of the universe’s ghost particles.

Neutrinos are considered the tiny particles without any electric charge and possess the ability to pass through everything.

Despite being the universe’s most abundant particles, scientists have failed to unlock their secrets.

Neutrinos are of three types or “flavors” and can change their forms through oscillation as they travel.

However, a new study based on the findings obtained from two major neutrino experiments in the United States and Japan has offered promising insights into these ghostly particle types and their masses.

The proper understanding of neutrinos is necessary to unlock some of the universe’s biggest mysteries, including the origin of matter, nature of dark matter, and workings of supernovas.

The research study is based upon two types of experiments. The NOvA experiment beams neutrinos underground about 500 miles from Fermi National Accelerator Laboratory to a detector in Ash River.

Similarly, the T2K experiment sends a neutrino beam about 185 miles through the Earth’s crust from Tokai to a detector in Kamioka.

The findings published in the journal Nature showed a tiny mass gap between two of three neutrinos with an unprecedented accuracy, less than 2 percent uncertainty.

The scientists mark this finding as one of the “most precise measurements of this parameter ever achieved.”

The study also delves into interchangeability of forms between neutrinos and antineutrinos.

"That question is especially important because it may help explain one of the biggest mysteries in physics: why the universe is made mostly of matter instead of antimatter,” said Ohio State University physicist and NOvA scientist Zoya Vallari.

But the experiments fail to measure “neutrino mass ordering” that has big implications for physics.