Editor's note: Last July, the Large Hadron Collider discovered a new particle, most likely the Higgs boson known as the God particle. This week, physicists from all over the world gathered in Italy to hold a two-week meeting to discuss the latest developments in the field of particle physics and cosmology. Many experts still hope that a new discovery will be made when the Large Hadron Collider resumes work later in 2014. At that time, the device will collide with protons at a higher energy level, which may reveal a new physical picture.
According to a report on March 8th, Beijing time, according to a report on the online website, the discovery of the Higgs boson by the Large Hadron Collider at the European Nuclear Center has finally released new progress.
This week, physicists from all over the world gathered in Italy to hold a two-week meeting to discuss the latest developments in the field of particle physics and cosmology. On March 6, the ATLAS and CMS detector teams of the Large Hadron Collider equipment reported the results of their latest data analysis. Except for some vague statements, their reports are generally uninnovative and lacking in quality.
European Nuclear Center spokesman James Gillies wrote on the agency ’s official website: “The new particles discovered at the European Nuclear Center last year are now more and more likely to be Higgs bosons. However we More analysis is still needed to make a final conclusion. "
The Higgs boson, which physicists have been searching for for a long time, is the only particle in the standard model of physics that has not yet been found. This particle will help explain the interaction between all known particles and forces, so Sometimes referred to as "God Particle". So far, physicists of the Large Hadron Collider project are still extremely cautious in referring to the new particle they discovered in July last year as the "Higgs boson." This makes sense, because the characteristics of this new particle have not yet been analyzed so far, so there may still be variables in the future.
But all the information so far points to the possibility that this new particle discovered last year is indeed the Higgs boson that people have long sought after in reality. The mass of this particle is about 125GeV, which is about 125 times the proton.
One of the basic properties of this new particle that physicists are currently trying to confirm is its spin. This is a very important characteristic of all subatomic particles and determines how it interacts with other particles. Analysis shows that a spin value of this "suspicious Higgs particle" discovered last year seems to be zero, which is fully in line with theoretical expectations. However, the result with a spin value of 2 cannot be ruled out. If it is finally determined that its spin is 2, then this will mean that the particle discovered last year is a new particle that was not previously expected. This will be an amazing situation. It will help physicists to reveal relevant information. A new understanding of the nature of gravity. However, this possibility seems to be getting smaller,
From the news that has been reported so far, some exciting things are hidden in the data. Data from the ATLAS detector has detected this phenomenon of suspected Higgs particles decaying into two protons, which may mean some new physical principles. In fact, this phenomenon has been noticed in the previous data, but at the time, it was thought that with the further analysis of the data, these signals will disappear by themselves. But the fact is that it continues to appear. Of course, at present, the significance of this signal has not yet reached a level that can be regarded as a new discovery, but, as the theoretical physicist Lisa Randall of Harvard University said, this The continuous appearance of a signal has indeed aroused the interest of many people. She said: "I think this news is exciting in terms of the information we currently have."
However, other physicists do not seem to feel anything new about this news release. Sean Carroll, a cosmologist at the California Institute of Technology, tweeted: "A big analysis of the new data of the Higgs boson-it looks nothing new."
And PeterWoit, a mathematician at Columbia University, wrote on his blog "worse than error": "In a word, the whole story looks like a Higgs particle under a standard model." He wrote : "The next experiment will further improve the overall accuracy and analysis level, but it seems that the general direction is unlikely to change again."
This situation is very different from the situation that the European Nuclear Center just released in July last year and found that Higgs suspected an uproar. After the news was released at that time, it attracted strong attention in the entire physics community and the general public. The Internet is full of interesting rumors, leaked videos, and tireless discussions.
Now some physicists are beginning to worry that new particles will no longer be found in the data of the Large Hadron Collider. Scientists especially hope to find evidence that supports a theory called "supersymmetry", which believes that all known particles have a companion particle, but this theory still lacks evidence. Supersymmetry theory has been used to solve many problems in the standard model of particle physics, but now because of the lack of sufficient evidence, this theory is being questioned.
However, many experts in this field still have new discoveries when the Large Hadron Collider resumes work later in 2014. At that time, the device will collide with protons at a higher energy level, which may reveal a new physical picture.
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