Physicists Have Made the World’s Most Precise Measurement of Neutron Lifetime - SciTechDaily

October 12, 2021.

The high-efficiency ultracold neutron detector employed in the “bathtub” trap.

Credit: Los Alamos National Lab / Michael Pierce.

An international team of researchers has made the world’s most precise measurement of the neutron’s lifetime, which may help answer questions about the early universe.

An international team of physicists led by researchers at Indiana University Bloomington has announced the world’s most precise measurement of the neutron’s lifetime.

(Callahan and Gonzalez are currently affiliated with Argonne National Laboratory and Oak Ridge National Laboratory, respectively.) The research was conducted at Los Alamos National Laboratory.

“The process by which a neutron ‘decays’ into a proton — with an emission of a light electron and an almost massless neutrino — is one of the most fascinating processes known to physicists,” said Salvat, who led the experiments at Los Alamos.

“The effort to measure this value very precisely is significant because understanding the precise lifetime of the neutron can shed light on how the universe developed — as well as allow physicists to discover flaws in our model of the subatomic universe that we know exist but nobody has yet been able to find.”.

The neutrons used in the study are produced by the Los Alamos Neutron Science Center Ultracold Neutron source at Los Alamos National Lab.

“Our new measurement of the neutron lifetime will provide an independent assessment to settle this issue, or provide much-searched-for evidence for the discovery of new physics.”.

Reference: “Improved neutron lifetime measurement with UCNt” by F.

Young, 13 October 2021, Physical Review Letters.

Everyone is reporting a new measurement, how it was done, nobody is reporting what that measurement was.

If you aren’t going to report what the measurement was, why report it at all.

Useless information seems to intrigue your readers, and I can’t think of anything more useless than reporting that there was a measurement without reporting the actual measurement.

October 10, 2021.

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October 9, 2021