Violet mordant for brass items. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Violet mordant for brass items. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Small brass things, for example buttons, clasps, buckles, etc., can be painted in purple by lubricating a strongly heated thing with a piece of cotton soaked in antimony oil.

Antimony oil (Butyrum antimonij) is an impure antimony trichloride.

Author: Korolev V.A.

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Higgs boson lifespan measured 14.12.2021

Physicists working on the CMS detectorScientists for the first time managed to measure the lifespan of the Higgs boson - 210 yoctoseconds of the Large Hadron Collider, for the first time were able to accurately measure how long the Higgs boson lives. It was known that this elementary particle exists for a very short time: only less than one trillion billionth of a second, or 1.6?10-22 seconds.

But scientists needed to experimentally more accurately calculate the lifetime of the particle. This would allow them to understand its nature and find out if this value corresponds to the value predicted by the Standard Model of particle physics. And yes, it matched.

According to the theory, the experiments established only the boundaries of the lifetime of the particle or determined this property with a large error. Measuring the lifetime of the Higgs boson is a difficult task because its predicted lifetime is too short. One possible solution was to measure a related property, the width of the mass. The mass width is inversely proportional to the lifetime. In addition, it represents a small range of possible masses around the nominal particle mass of 125 GeV.

So physicists made the first measurement of the width of the Higgs boson (H) during the second run of the Large Hadron Collider. They focused on data on the transformation of Higgs bosons into two Z bosons.

Scientists for the first time managed to measure the lifespan of the Higgs boson - 210 yoctoseconds, which themselves are transformed into four charged leptons

Scientists for the first time managed to measure the lifespan of the Higgs boson - 210 yoctoseconds
Reconstruction of an event in the CMS detector where a Higgs boson candidate is accompanied by two high-energy particle jets (yellow cones). The candidate Higgs boson decays into a muon-antimuon pair (red bands) and a neutrino-antineutrino pair. The last pair cannot be detected in the experiment, which leads to the absence of a transverse momentum (purple arrow) with respect to the beam direction.

Scientists have obtained the first evidence of the formation of Higgs bosons outside the shell. The result suggests that the lifetime of the Higgs boson is 210 yoctoseconds - that's on the order of septillionths of a second, or decimal point, followed by 22 zeros - (+2,3/-0,9) x 10^22.

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