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The Higgs Boson Has Finally Been Observed To Decay Into Elementary Particles Known As Sub-quarks

Six years after its discovery, the Higgs boson has finally been observed to decay into elementary particles known as sub-quarks. Today, the finding presented by ATLAS at CERN1 and with CMS collaborations at the Large Hadron Collider (LHC) is consistent with the hypothesis that the entire quantum field behind the Higgs boson also gives mass to the lower quark.

The Standard Model of particle physics predicts at about 60% that a Higgs boson will decay into a pair of lower quarks, the second heaviest of the six kinds of quarks.

Testing this prediction is very important because the result will either support the standard model that says the Higgs field adds mass to quantums and other elementary particles, or it will point to new physics theories by shaking the theory to their foundations.

The Higgs boson decay channel is easy to detect because it’s been six years since the boson was discovered. The reason for the difficulty is that there are many other ways in which sub-quarks are produced in proton-proton collisions. This makes it difficult to isolate the decay signal of the Higgs-boson from the “background” noise associated with such processes. In contrast, the less common Higgs-boson decay channels observed during particle discovery, such as the decay of a pair of photons, are easier to isolate.

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To isolate the signal, the ATLAS and CMS collaborations combined each data from the first and second runs of the LHC, which included collisions at 7, 8, and 13 TeV energies. They then applied sophisticated analysis methods for the data. In determinations made by both ATLAS and CMS, the decay of the Higgs boson found that a pair of bottom quartz decayed with a significance exceeding 5 standard deviations. Moreover, both sets are within the current precision of the rate measurement system consistent with the Standard Model estimate.

Karl Jakobs, spokesperson for the ATLAS collaboration. “This observation is a crucial point in the discovery of the Higgs boson. This is his deep understanding of the data of ATLAS and CMS experiments and exceeded the expectations of even those behind this work.” said.
Joel Butler, spokesperson for the CMS collaboration. “Since the first experimental observation of the Higgs boson to tau-leptons a year ago, CMS, together with our colleagues at ATLAS, observed the binding of the Higgs boson to the heaviest fermions (tau, ball and bottom quarks). Excellent LHC performance and modern machine-learning techniques, enabled us to reach this result earlier than expected, “he said.

* Those who conduct the study with more data will increase the precision of these and other measurements and prevent the Higgs boson from decaying into a large number of non-large fermions called muons. They will always track deviations in data that may point to physics beyond the standard model *
Eckhard Elsen, CERN Director of Research and Computing. “Experiments continue to be carried out in the field of Higgs particles, which is generally regarded as a portal for new physics. These achievements underline our plans to develop the LHC to greatly increase statistics. The precision in analysis methods is in the change of perspectives in all new physics and physics. We hope it will be very effective in the discoveries. ”

Source: CERN

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