Chapter 960: Experimental data analysis completed!
How massive and high-energy dark matter particles are preserved from the original universe to today is a mystery not only to Xu Chuan, but also to the entire theoretical physics community.
However, although the problem exists, it does not affect the current research.
The void field·dark matter theory has been highly verified in collision experiments at energy levels from 35 Tev to 125 Tev. Dark matter particles of different masses and energy levels do exist in the universe.
These particles are almost undetectable in ordinary observations and collision experiments, but in collision experiments with energy levels exceeding 17 Tev, traces can be observed.
And in collision experiments at different high energy levels, the collision data derived from different types of dark matter particles are different.
These things have verified the theory proposed by Xu Chuan from the side. Dark matter particles not only exist in the universe, but their types are rich and diverse, and may be more than people have speculated.
Different dark matter particles constitute different forms of dark matter, which play a very important role in the development of the universe.
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35Tev,50Tev,75Tev,100Tev.....
The analysis of the collision experiment data of different energy levels was completed quickly, and the Dalitz diagrams were continuously sent to the office of the director of the CRHPC organization.
As the general person in charge of the collision detection experiment between sterile neutrinos and massive dark matter particles, Xu Chuan is back to his busiest state.
Although he no longer needs to personally participate in the analysis of raw data, the huge experimental data also determines that it is impossible for him to carefully screen and analyze every segment of data.
But as the overall person in charge of the project and as a scholar, no matter from which perspective, he must stand in the most critical position and strictly control the overall link.
Of course, in addition to strictly controlling and testing the overall analysis of experimental data, Xu Chuan is also doing another thing.
That is to explore the mystery of how massive and high-energy dark matter particles were preserved from the original universe to today.
For him, this is a completely new territory.
If he can solve this problem and find out how large-mass and high-energy dark matter particles are preserved from the original universe to today, perhaps many unsolved problems in today's physics community will be solved.
For example, galaxies like the Milky Way containing hundreds of billions of stars, the reason why they can exist in the universe has a lot to do with dark matter.
The supermassive black hole at the core of the galaxy is one of the keys to maintaining the galaxy's stability.
But the supermassive black hole Sagittarius A, the core black hole of the Milky Way, obviously cannot pass through ordinary small and medium-sized black holes. It is formed by the collapse of a star after completing a supernova explosion.
Under normal circumstances, there is a limit to the mass of a star.
This upper limit is mainly determined by the balance between the nuclear fusion reaction and gravity inside the star, and is approximately 300 times the mass of the sun.
When the mass of a star exceeds this limit, the energy generated by the nuclear fusion reaction inside it is not enough to resist its own gravity, causing the star to collapse and eventually a black hole may be formed.
The mass of Sagittarius A at the center of the Milky Way reaches an astonishing 4.5 million times the mass of the sun.
It is obvious that such a massive black hole in the center of a galaxy cannot be formed through the supernova explosion or collapse of a star.
Some people may also think that interstellar dust or stars and other materials are very abundant in the center of the galaxy, and Sagittarius A may have acquired such a huge mass by rapidly swallowing these materials, or by continuously merging with other black holes.
There is no denying that this is indeed possible.
But the merger between black holes is not enough to fully explain this problem, because the star-making movement in the center of the Milky Way is still quite violent so far.
If the black hole is formed by the merger of black holes or by swallowing up the star dust and stars in the center of the galaxy on a large scale, then the matter in the center of the galaxy should be very scarce.
However, the facts observed by the astronomical community are obviously inconsistent with this inference.
If we consider it from the perspective of dark matter, then the formation of supermassive black holes and the bustling star-making movement in the center of the galaxy can be perfectly explained.
Because what it consumes is not conventional visible matter, but massive dark matter clumps accumulated in the center of galaxies like the Milky Way.
How to perfectly explain these theories and make logical mathematical calculations is what Xu Chuan has always done.
...
The days passed like this day by day.
In early July, just after the mild summer heat, when Jinling officially entered the hottest weather every summer, in the office of the director of the CRHPC organization, a latest acceptance report of the collision experiment was delivered to Xu Chuan.
"Professor, this is the complete analysis report compiled."
In the office, the assistant knocked on the door and walked in, gently handed over the report document in his hand, and then said: "In addition, the specific electronic version has been sent to your mailbox via email."
Xu Chuan nodded, took the document and asked: "Has the acceptance report been arranged for the analysis report of the 125Tev energy level collision experiment submitted by Nanda University and Shanghai Jiaotong University?"
The assistant nodded quickly and said: "It has been arranged. It will be at two o'clock this afternoon."
Xu Chuan: "Okay, I understand. Remember to come over at two o'clock in the afternoon to remind me."
After saying that, he withdrew his attention, returned to the manuscript paper spread out on the table, and opened the acceptance report sent by his assistant.
From mid-June to early July, about half a month passed.
With the assistance of major universities and physical research institutions, the data analysis of the collision experiment between sterile neutrinos and massive dark matter is progressing very quickly.
After all, this is a detection experiment of an elementary particle that is most likely to be one of the dark matter particles in current theoretical physics.
This chapter is not over yet, please click on the next page to continue reading! Even if you cannot take a dominant position in the project and are just a part of screwing, there are many universities and research institutions trying to leave a mark on this epic historical monument.
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This is not the first time that a university or research institution has submitted an analysis report on the 125Tev energy level to him.
As early as three days ago, Harvard University in the United States and Columbia University in Maple Leaf Country submitted an analysis report to the Council.
However, at the acceptance report meeting in the infield yesterday, scholars from other universities pointed out data problems with the Darize diagram they finally completed, and it was eventually sent back for revision.
Seizing this gap, Nanjing University and Shanghai Jiao Tong University, which are also conducting data analysis on the 125 Tev energy level collision experiment, jointly submitted an application for an acceptance report, and this was the second acceptance report today.
For the detection of sterile neutrinos and dark matter, the collision experiment at the 125 Tev energy level is already the last data that has not yet completed the in-field acceptance report.
If the acceptance reports submitted by Nanda and Shanghai Jiao Tong University successfully pass the in-field acceptance, then Xu Chuan will officially hold a new round of reporting meetings to submit the detection report results of sterile neutrinos and dark matter particles to the entire physics community.
If it fails, the 125Tev energy level collision experiment analysis report will be returned to the CRHPC agency for internal competition.
Given that major universities and physics institutions are currently eyeing this key result, I am afraid that if it is rejected, Nanjing University and Shanghai Jiaotong University will no longer have the opportunity to resubmit the acceptance application report.
Although he has already read the acceptance reports submitted by the two and there are no major problems, he cannot alone have the final say in this cutting-edge theoretical analysis and judgment.
And compared to conducting detailed inspections of the acceptance analysis reports of Nanjing University and Shanghai University of Finance and Economics, he himself had more important things to do.
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The acceptance report of the 125Tev energy level will be held in the Zhonggong Lecture Hall.
The lecture hall was packed with seats, and it was completely dark as far as the eye could see.
Regarding the last key result of the collision experiment between sterile neutrinos and dark matter particles, it is no exaggeration to say that researchers from almost the entire CRHPC institution came.
Of course, sitting here are not only internal researchers from CRHPC, but also physicists from other research institutions who have traveled thousands of miles to come here, and even scholars from CERN.
This is the last high-energy acceptance report meeting for the sterile neutrino and dark matter particle detection collision experiment. If it can be completed successfully, it will mean that humans have officially found the dark matter particles that were invisible in the past and learned their characteristics.
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In fact, as early as three days ago, more scholars participated in the acceptance report held by Harvard University and Columbia University, but unfortunately they were not able to pick off this pearl on the laurels.
...
The report meeting is about to start in ten minutes. Everyone has already taken their seats and is discussing in whispers in the conference hall.
So far in the exploration of dark matter particles, no one doubts whether CRHPC can find dark matter particles.
What everyone is waiting for is just the last few report meetings.
Looking at the discussion in the venue, Witten, who was sitting in the table, looked around the venue and said with some doubts on his face.
"Where are the others?"
Sitting next to Witten, Professor Frank Wilczek turned his head and looked over, curiously asking: "Who?"
Witten pointed to the seat in the front row, where one of the council acceptance representatives with nameplates was obviously vacant.
The vacancy is none other than Xu Chuan, the chairman of the CRHPC organization and the general person in charge of this collision detection experiment of sterile neutrinos and dark matter.
The acceptance report for the 125Tev energy level is about to begin, but his student has not shown up yet, which makes Witten a little confused.
"Maybe there's something urgent?"
After thinking for a while, Wilzek said: "Wait a little longer, he probably won't miss this acceptance report meeting. After all, he has participated in every previous acceptance report meeting. This is the most critical one."
.”
Witten nodded and said no more.
Time passed by, and just when Professor Zhao Hu, who was doing the acceptance report of the 125 Tev energy level collision experiment at Jiaotong University in Shanghai, was already standing on the stage, Xu Chuan hurriedly opened the door of the conference hall and walked in.
After saying hello to other members of the acceptance team beside him, Xu Chuan put down the documents he brought with him, his eyes fell on the speaker on the stage, and he nodded gently, indicating that the other party could start.
On the reporting table, Professor Zhao Hu was relieved when he saw Xu Chuan finally arriving, and officially began the analysis report on the 125 Tev energy level collision experiment.
The PPT that had been prepared long ago was opened page by page along with the sound of the report, and the data analysis work of the 125 Tev energy level collision experiment once again came into the eyes of all the audience in the audience.
Similar to Harvard University and Columbia University, which had previously submitted the same acceptance report meeting, when processing the huge raw data, they used the method of reconstructing the decay process through experimental data, but in some specific data and mathematical tools used for calculation
Just slightly different.
This means and technology is a common method for the current detection of dark matter particles.
Because theoretically, dark matter particles do not have strong interactions and electromagnetic interactions, but only extremely weak weak interactions and gravity, which makes it difficult to directly observe them in collision experiments.
The detector can only record all its collision decay products, that is, record its decay characteristics after the collision.
By analyzing the original data and then reconstructing the decay process from the experimental data, if it matches a certain decay path of sterile neutrinos and dark matter particles, it is classified as a possible generated event.
For the theoretical physics community, this is the stupidest method, but it is also the most effective method currently.
Before the detection equipment and technology that can directly detect dark matter particles are produced, they can only understand the characteristics of some dark matter particles through this side method.
The PPT was shown page by page, and the concise and clear reporting style and clear ideas made the scholars in the audience nod their heads in praise.
In the venue, looking at the reporter who was a little nervous and cramped at the beginning but now more and more calm, Witten said softly: "It seems that the data analysis work of the last energy level collision experiment is about to have results."
On the side, Professor Wilzek nodded with a smile and said in agreement: "The rest depends on when Xu Chuan completes the final arrangement."
If the 125 Tev energy level collision experiment data can successfully pass this acceptance report meeting, then all the energy level data of this collision detection experiment between sterile neutrinos and massive dark matter particles will have been analyzed.
The existence of dark matter particles is already a certainty. As long as the person sitting in the front row of the acceptance team officially announces it, physics will enter a new era.
Witten smiled, his eyes fell on the student sitting in the front row, and he said with a smile.