Scientists closer to understanding why the universe exists

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2020-04-25 20:20:12

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Scientists closer to understanding why the universe exists

When the universe was born nearly 14 billion years ago, it created matter and antimatter, which destroy each other at the meeting. antimatter of the same mass as the particles of matter, but their electric charges are opposite. The most famous example is the electron (normal negatively charged particle) and a positron (positively charged particle). But if in the beginning there was matter and antimatter, why then there was only the matter? This question is one of the defining mysteries of physics. For decades, theorists have come up with potential solutions, most of which assumed the existence in the Universe of additional, unknown particles. But whatever the final answer, scientists believe they have made a step towards a final understanding of one of the greatest mysteries of the Universe: why it exists at all.

War of matter and antimatter

A Group of scientists from Japan published a study in the journal about the discovery of fundamental particles that can be responsible for uneven distribution of matter and antimatter in the Universe. Agree, it would be logical to assume that if at birth the Universe appeared the same number of particles and antiparticles, they would have just destroyed each other. In this case, us and the cosmos itself would not exist. But we exist, and therefore it did not happen.

The authors of the study, the existence of the Universe was possible because the substance slightly exceeded the amount of antimatter. Roughly speaking, only one particle in a billion pairs of particle-antiparticle changed everything. This violation of symmetry between matter and antimatter is called the baryon asymmetry. Due to the huge proton accelerator and 9 years study of the data on their experiments, the scientists were able to reveal today the most convincing proof that the cause of asymmetry was the behavior of neutrino of subatomic particles, a huge burst which occurred during the Big Bang. When neutrinos eventually broke up, then according to this theory formed the by-products of more matter than antimatter.

the Reason why the Universe has more matter than antimatter has interested scientists almost 100 years

The thing is that neutrinos are much lighter than quarks and pass through space almost without stopping to interact with anything at all. But since there is matter and antimatter exist as ordinary neutrinos that we know of, and extremely heavy neutrinos. These particles are so giant that could only be created from the vast energies and temperatures present immediately after the Big Bang, when the universe was very hot and dense.

The Inevitable decay of these particles into smaller and more stable the species, could lead to a slightly greater amount of matter than by-products of antimatter that would lead to the existing structure of our Universe, writes .

Experiment Tokai to Kamioka

The results of the experiment called the Tokai to Kamioka (T2K) showed that there is a 95% probability that neutrino decay into an uneven proportion of matter and antimatter.

In the experiment, scientists have observed neutrinos when they raced 295 kilometers underground and changed your grade is a kind of ability of neutrinos, called neutrino oscillation. Underground detector laboratory Kamioka in Japan is a tank filled with 55 000 tons of pure water. When a neutrino interacts with a neutron in the tank, the result may be born muon (unstable elementary particles with a negative electric charge) or electron. It is this shift of muon neutrinos and muon antineutrinos in their "mirror" shape – electron neutrino and an electron antineutrino has interested scientists. Read more about what muons and what other ways scientists are searching for neutrinos.

Fully particles neutrinos humanity is not yet able to explore

However, for exact measurement of how much different neutrinos and antineutrinos, would require additional data and possible future experiments. It is important to understand that to completely solve the problem of cosmic antimatter, the scientists can not. The fact that the solution to this fundamental issue requires further requirement of neutrinos and antineutrinos must be one and the same substance. But how is this possible?

If such a possibility really exists, it might explain a little less than one six millionth of the mass of the electron. But if neutrinos and antineutrinos are one and the same, then they can getmass is not due to the interaction with the Higgs field (which is associated with the Higgs boson), as does the majority of the particles, and due to neutrino oscillations. It's kind of swings that allow you ghostly particle to change – when one rises, the other falls, and so on. However, the data obtained by the researchers still need to double-check. Besides, it is not known how well they fit the observed discrepancy in the number of particles and antiparticles. And yet, it is impossible not to experience the thrill of gradually solving the secrets of the Universe. Agree?

Researchers support the massive Super Kamiokande detector with inflatable boats.

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