Chapter 161 Starting From Mathematics

After analyzing the last bit of data in his hand, Xu Chuan stood up and stretched, then handed the completed analysis data to Chen Zhengping.

So far, the work assigned to him by Chen Zhengping has been completed, and the analysis of the experimental data in his hand has been completed.

"Thank you for your hard work."

In the office, Chen Zhengping took the analysis data from Xu Chuan and looked through it.

"Nothing, it's just a pity that I couldn't find any clues to the Yukawa coupling phenomenon between Higgs and the third-generation heavy quarks."

Xu Chuan shook his head. It was a bit regrettable that he didn't find any clues to the Yukawa coupling phenomenon between Higgs and the third-generation heavy quarks from the experimental data this time.

But there was nothing he could do about it.

Even if he knew very well that the Yukawa coupling phenomenon between Higgs and the 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 will be loopholes, and it will be discovered sooner or later. He can't 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 is very good. He was not disturbed or discouraged.

He has been doing research for many years. Success and failure are nothing to him.

Of course, this is also related to the fact that the other two universities did not produce any results in this experimental research.

No one found it, which means that there is indeed nothing in the data this time, so it can't be considered a failure.

After sending the analyzed data to Chen Zhengping, Xu Chuan sat back at the table.

The tutor's work has been completed, and the rest is his own arrangement.

"Let me see if I can find something from these data."

Staring at the data on the table, Xu Chuan muttered to himself.

The data on the manuscript paper was processed by him. There is no hope to find the Yukawa coupling phenomenon between Higgs and the third-generation heavy quarks (top quark t and bottom quark b) from these data.

But it may be possible to find the ideal search channel where the Higgs boson is most likely to decay 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 narrow the energy level of the target.

Moreover, the standard model has already predicted the existence of this particle or phenomenon, and simply narrowing the collision energy level area does not make much sense for researchers.

Perhaps this is very valuable for CERN, after all, it can reduce funding expenditures, but it has no value for researchers who narrow the research area. The Nobel Prize will not be awarded to you for this work, it will only be awarded to those who propose theories.

A difficult job that cannot bring much value to researchers is not something that anyone will do.

Anyway, the particle collider is right under our feet. If something is not found at one energy level, just search at the next energy level. They don't need to worry about the funding for the LHC, and there is no need to work hard on it.

After the discovery of the Higgs boson in 2012, CERN further carried out research on the Higgs boson.

Because theoretically, the Higgs boson is the origin of the mass of elementary particles, and it may also be the origin of the mass of dark matter.

So it may be a "window" to the world of dark matter.

Therefore, in-depth research on the properties of the Higgs boson has far-reaching significance for revealing the nature of new interactions, understanding the mechanism of electroweak symmetry breaking and the early evolution of the universe.

After the restart of the LHC, this kind of research has never stopped.

Unfortunately, up to now, CERN has only observed less than 30% of the Higgs boson decays predicted in the standard model.

This includes the Yukawa coupling phenomenon of the Higgs and the third-generation lepton (Tao t) observed in 2015.

But this is only part of the prediction of the standard model.

The remaining possible decays are still elusive, and no one can find any traces from them.

The Yukawa coupling of the Higgs and the third-generation heavy quarks (top quark t and bottom quark b) is a decay predicted by the standard model.

It can Yukawa coupling with the third-generation heavy quarks, giving part of the particle mass.

These particles may be the raw materials of common substances in our daily life, such as iron, copper, nickel, gold, silver and other metals.

But so far, CERN's collider LHC has not been able to find traces of its decay and coupling from the collision experiment.

Currently, the observation of this decay mode and the measurement of its rate are determined or uncertain by the Yukawa interaction to determine the mass generation of fermions.

However, in the collision experiment, various detection equipment, such as the ATLAS hyper-toroidal instrument experimental detector, can observe not only particle collision data, but also more background fluctuations, noisy signals, other signals, etc.

These things occupy the absolute majority of the overall collision data.

According to the collision data, the proportion of useful data in these waste data is only one in three million.

To analyze useful data from such an exaggerated proportion, we have to mention CERN's supercomputers and global computing grid, as well as the computer codes written by particle physicists to analyze these data.

When the LHC restarts in 2015, the doubled collision rate will generate about 30PB of data per year, which is almost equivalent to 1GB of data per second.

In order to analyze and process such a huge amount of data, today's particle physicists spend most of their time writing computer codes.

Physicists and engineers at CERN have written thousands of lines of code, and on average more than 20,000 programs are running every day to search for unusual signals in millions of events.

These excellent programs are not only used to analyze particle data, but also 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 at CERN to improve algorithms.

And the world's best data analysis programs and the most advanced information sharing programs were also born here.

It can be seen that sometimes, it is not necessarily your peers who kill you, but from a field you can't even imagine.

With the help of CERN's excellent programs, it took a few days for Xu Chuan to successfully complete the data processing in his hands.

The processed data was transformed into a series of Dalitz diagrams by his hands.

The biggest advantage of Dalitz diagrams is that it allows people to see at a glance the density distribution of physical events, the existence of resonant states, the mutual interference of resonant states, the angular distribution of final state particles, and other physical quantities.

With this, the rest of the work is not very difficult.

After all, for him, finding useful information from Dalitz diagrams is his best skill.

But this time, he needs to analyze from another angle.

Staring at the Dalitz diagram on the computer screen, 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, but when he habitually switched to a mathematical perspective to analyze them according to the 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 are complex and intertwined. If you want to analyze it from a mathematical method, the difficulty is no less than untangling a ball of twine played by a cat. You can't even find the end of the thread, let alone do it.

On the other side, Qi Xishao, who was holding a thermos cup and filling a cup with hot water, walked past Xu Chuan, his eyes falling on the messy manuscripts on the table and the Dalitz diagram on the display screen.

"Junior brother Xu, are you still analyzing the data?" Qi Xishao frowned slightly as he looked at the familiar things on the table.

The Yukawa coupling experiment for Higgs and the third-generation heavy quarks (top quark t and bottom quark b) has been basically completed. This experiment did not find any clues. Now Nanjing University has begun to prepare to submit acceptance materials and apply for a report meeting.

At this point, it can be declared over, and researchers can put down their work.

But Xu Chuan is still analyzing the data, which makes Qi Xishao a little worried, worried that this excellent junior brother has been hit.

After all, he became famous at a young age and solved a world-class problem in mathematics and physics. This is the first time he faces failure. He can't bear this kind of blow, and it is possible that he wants to find something from the data in a paranoid way.

Thinking of this, Qi Xishao is ready to enlighten Xu Chuan.

On the road of academics, failures are always more than successes, and enduring failure is also a necessary path.