After analyzing the last bit of data in his hand, Xu Chuan straightened up and stretched, and then sent the completed analysis data to Chen Zhengping.
By now, the work assigned to him by Chen Zhengping has been completed, and all the experimental data analysis in his hands has been completed.
"Thanks a lot."
In the office, Chen Zhengping took over the analysis data from Xu Chuan and started looking through it.
"Nothing, it's just a pity that we couldn't find any clues about the Yukawa coupling phenomenon between Higgs and third-generation heavy quarks."
Xu Chuan shook his head. It was a pity that he did not find any clues about the Yukawa coupling phenomenon between Higgs and third-generation heavy quarks from this experimental data.
But there is nothing we can do about it.
Even if he knew very well that the Yukawa coupling phenomenon between Higgs and third-generation heavy quarks definitely existed, it was impossible to fabricate a piece of data out of thin air.
In scientific research experiments, fraud will be despised by everyone.
No matter how sophisticated the fraud is, there are still loopholes, and sooner or later someone will discover it. It is impossible for him to do such a thing.
Hearing this, Chen Zhengping smiled and said: "It's nothing. Not all research can lead to discoveries. This is normal."
"And with this experiment and data analysis, it will be much easier for us to apply for research in this area next time."
Chen Zhengping's mentality was actually very good, and he was not disturbed or discouraged.
He has been doing research for many years, and success and failure are nothing to him.
Of course, this is also related to the fact that the other two universities also failed to produce results in this experimental study.
No one discovered it, which means that there is indeed nothing in the data this time, and it cannot be considered a failure.
........
After sending the analyzed data to Chen Zhengping, Xu Chuan sat back at the table again.
The instructor's work has been completed, and the rest is his own arrangement.
"Let me see if I can discover anything from these data."
Staring at the data on the table, Xu Chuan muttered to himself.
He had already processed the data on the manuscript, and there was no hope of finding the Yukawa coupling phenomenon between the Higgs and the third-generation heavy quarks (top quark t and bottom quark b) from these data.
But it may still be possible to find the ideal search channel for the most likely decay of the Higgs boson from these data.
This is not a new path, and it is not that no one has tried it before, but it basically ended in failure.
Because it is too difficult to mathematically reduce the appearance energy level of a target.
Moreover, the standard model has already predicted the existence of such particles or phenomena. Simply narrowing the collision energy level region does not mean much to researchers.
Perhaps this is of great value to researchers, as it can reduce funding expenditures, but it is of little value to researchers who narrow down their research areas. The Nobel Prize will not be awarded to you for this work, it will only be awarded to those who propose theories.
people.
A job that is difficult but does not bring much value to researchers is something that few people will do.
Anyway, the particle collider is right at their feet. If something is not discovered at one energy level, just search for it at the next energy level. They do not need to worry about the funding of the LHC, and there is no need to struggle with it.
...
After the discovery of the Higgs boson in 2012, CERN further launched its research on the Higgs boson.
Because theoretically, the Higgs particle is the origin of the mass of elementary particles and may also be the origin of the mass of dark matter.
So it may be a 'window' into the world of dark matter.
Therefore, in-depth study of the properties of the Higgs boson has far-reaching significance for revealing the nature of new interaction forces, understanding the electroweak symmetry breaking mechanism, and the early evolution of the universe.
After the LHC restarted, this type of research has not stopped.
Regrettably, so far, less than 30% of the Higgs boson decays predicted in the standard model have been observed.
Among them is the Yukawa coupling phenomenon between the Higgs and the third-generation lepton (Tao t) that was observed in 2015.
But this is only part of what the Standard Model predicts.
What remains of possible decay remains elusive, and no one has been able to find traces of it.
The Yukawa coupling between the Higgs and the third-generation heavy quark (top quark t and bottom quark b) is a kind of decay predicted by the standard model.
It can perform Yukawa coupling with third-generation heavy quarks, giving some particles mass.
These particles may be the raw materials that make up common substances in our daily lives, such as iron, copper, nickel, gold, silver and other metals.
But so far, the LHC collider has not been able to find traces of its decay and coupling from collision experiments.
Currently, observing this decay mode and measuring its rate is based on the Yukawa interaction to determine or determine the mass production of fermions.
But in collision experiments, various detection equipment, such as the atlas torus instrument experimental detector, can observe not only particle collision data, but also more background fluctuations, noisy signals, other signals, etc.
These things account for the absolute majority of the overall collision data.
According to the collision data, the proportion of useful data in this waste data is only one in three million.
To analyze useful data from such an exaggerated proportion, we have to mention supercomputers and global computing grids, as well as the computer codes written by particle physicists to analyze these data.
When the LHC restarts in 2015, doubling the collision rate will generate approximately 30 petabytes of data per year, which is almost equivalent to 1 gigabyte of data per second.
In order to analyze and process such huge amounts of data, today's particle physicists spend most of their time writing computer code.
Thousands of lines of code have been written by physicists and engineers, with an average of more than 20,000 programs running every day, searching for unusual signals in millions of events.
These excellent programs are not only used to analyze particle data, but can also be used for big data analysis, data detection and other tasks.
Google has established the world's largest cloud data intelligent analysis here, using the huge data generated every day to improve its algorithms.
The world's best data analysis programs and the most advanced information sharing programs were also born here.
It can be seen that sometimes, the person who kills you is not necessarily your peers, but comes from a field that you have never imagined.
.......
With the help of excellent programs, Xu Chuan successfully completed the data processing in his hands in a few days.
The processed data then passed through his hands and turned into a series of Dalitz diagrams.
The biggest advantage of the Dalitz diagram is that it allows people to clearly see the density distribution of physical events, the existence of resonance states, the mutual interference of resonance states, the angular distribution of final particles... and other physical quantities.
With this, the rest of the work isn't that difficult.
After all, for him, finding useful information from Daliz diagrams is what he is best at.
But this time, he needed to analyze it from another angle.
Staring at the dalitz picture on the computer monitor, Xu Chuan fell into deep thought.
From a physical point of view, he is not unfamiliar with these things, and can even be said to be very familiar with them. However, when he habitually switched to a mathematical perspective to analyze them based on his previous thinking, he became a little confused.
He couldn't find the direction to start at the first time. The letters and numbers on the dalitz diagram were intertwined and complex. To analyze it mathematically, it was as difficult as untangling a ball of twine that had been played by a cat. The threads could not even be found.
, let alone take action.
On the other side, Qi Xishao, who was holding a thermos cup and filling a cup with hot water, walked past Xu Chuan and his eyes fell on the messy manuscript paper on the table and the dalitz picture on the display screen.
"Junior Brother Xu, are you still analyzing data?" Qi Xishao frowned slightly as he looked at the familiar things on the table.
The Yukawa coupling experiment between Higgs and the third-generation heavy quark (top quark t and bottom quark b) has been basically completed. This experiment indeed found no clues. Now Nanda has started to prepare to submit acceptance materials and apply for a report meeting.
Already.
At this point, it can be declared over and the researchers can put down their work.
But Xu Chuan was still analyzing the data, which made Qi Xishao a little worried, worried that this outstanding junior brother had been hit.
After all, he became famous at a young age and has solved a world-class problem in mathematics and physics. This is the first time he will face failure. If he cannot bear the blow, it is possible to be paranoid and want to find something from the data.
Thinking of this, Qi Xishao was ready to enlighten Xu Chuan.
On the road to academic pursuits, there are always more failures than successes, and enduring failure is also a necessary path.