Located deep underground at the Baksan Neutrino Observatory in the Caucasus mountains in Russia, the completed two-zone gallium target, at left, contains an inner and outer tank of gallium, which is irradiated by an electron neutrino source. Credit: A. A. Shikhin

New scientific findings confirm the confusion observed in previous experiments, which may point to new unconfirmed particles, sterile neutrino, or suggest the need for a new definition of a typical natural model, such as the neutrino cross-category, which was first measured 60 years ago. Los Alamos National Laboratory is a leading American institution working with the Baksan Experiment on Sterile Transitions (BEST), the results of which were recently published in the journals Physical Review Letters and Physical Review C.

“The results are fascinating,” said Steve Elliott, a leading analyst at one of the data analytical teams and a member of the Los Alamos Physics category. “This confirms the confusion we have seen in previous experiments. But the implications of this are inconclusive. There are now conflicting results regarding sterile neutrinos. Other members of the Los Alamos group include Ralph Massarczyk and Inwood Kim.

Over one kilometer below the Baksan Neutrino Observatory in the Russian Caucasus Mountains, BEST used 26 irradiated discs of chromium 51, synthetic chromium radioisotope, and a 3.4 megacurie source of electron neutrinos, emissions outside a soft gallium tank. A silver medal was also used in previous experiments, although it was previously in the same tank. The reaction between electron neutrinos from chromium 51 and gallium produces isotope germanium 71.

The estimated production rate of germanium 71 was 20–24% lower than expected based on the theater model. That difference is consistent with the abnormalities observed in previous experiments.

THE BEST is based on the solar neutrino study, the Soviet-American Gallium Experiment (SAGE), in which the Los Alamos National Laboratory played a significant role, dating back to the late 1980s. The experiment also used gallium sources with high-intensity neutrino. The results of those and other studies showed a deficiency of electron neutrinos — the difference between the predicted effects and the actual results known as the “gallium anomaly.” Definition of deficiency may be evidence of a distinction between electron neutrino and sterile neutrino circuits.

The same confusion is repeated in the BEST test. Possible explanations also include oscillation into a sterile neutrino. Imagine particles can form an integral part of a black object, a type of imaginable matter created to form a large part of the physical universe. That translation may require further testing, however, because the dimensions of each tank were almost identical, albeit slower than expected.

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Alice is the Chief Editor with relevant experience of three years, Alice has founded Galaxy Reporters. She has a keen interest in the field of science. She is the pillar behind the in-depth coverages of Science news. She has written several papers and high-level documentation.

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