In the venue, Xu Chuan, wearing a suit, walked onto the podium from the side passage.
In Lecture Hall No. 1, the audience was crowded. There were about two to three hundred people sitting there. Among them were unknown little people, but also some big names in the academic world.
This was an exchange meeting that was in no way inferior to the previous exchange meeting where he reported the Weyl-Berry conjecture at Princeton University.
After all, this is where nearly half of the world's top theoretical physicists and high-energy physicists gather.
In the venue at this moment, there are more than three Nobel Prize winners in physics, not to mention the Einstein Prize winners, the Dirac Medal, the Hertz Prize, the Wolf Prize in Physics and other famous physics prize winners.
.......
On the podium, Xu Chuan tried the microphone. After confirming that there was no problem, he cleared his throat and said:
"It's an honor for all of you to attend today's report. The theme of today's report is about a calculation method for proton radius and a report on experimental data of atomic charge radius."
With that said, Xu Chuan inserted the USB flash drive in his hand into the computer, controlled the equipment in front of him, turned on the screen projection, showed the ppt, and then began to speak and report.
In order to leave some time to report on the solution to the proton radius mystery, Xu Chuan compressed the original report time.
Forty-five minutes of report, thirty minutes of speaking time, and fifteen minutes of question time were all compressed into fifteen minutes by him to complete a calculation method for the proton radius and a report on the experimental data of the atomic charge radius.
After briefly reporting on the work he had been doing for nearly a month, Xu Chuan looked at the audience under the podium.
"Regarding a calculation method of proton radius and a report on experimental data of atomic charge radius, the basic situation is this. The experimental analysis data has been submitted to the organization, and people will be arranged to conduct careful calculations. Do you have any questions?"
Under the podium, in the venue, an arm was raised.
Xu Chuan looked around and saw a somewhat unkempt old man raising his hand.
Seeing this person, Xu Chuan immediately remembered the words of Senior Brother Qi Xishao from before.
Rich Flick would not let him go.
This stubborn party in the particle physics community has always believed that the large proton radius is the truth.
Sure enough, he is here now.
He stood here today and raised his own doubts about the small proton radius.
This is a stubborn old man. Even if Xu Chuan is confident enough in his work, he can't help but have a headache.
After all, the other party is not a parallel professor. On the contrary, the other party has won the Wolf Prize in Physics, which is one of the highest honors in the physics world after the Nobel Prize in Physics.
But since the other party has already raised his hand to ask a question, it is impossible to avoid it.
After extending his hand to signal the other party to ask questions, Xu Chuan looked at the slovenly old man.
"I observed that in the reporter's demonstration data, on the ninth page, the incomplete qed value of the energy level of the hydrogen atom was corrected through the energy level formula. Will this affect the final proton radius value?
?Please ask the reporter to discuss."
Rich Frick stared at Xu Chuan and said word by word.
"Page nine?" Xu Chuan opened the argument data and found the place that Rich Frick knew.
"This correction comes from the fact that high-speed moving electrons will cause more or less displacement of protons, which will affect the measurement of the proton's radius, so correction processing is required..."
Before Xu Chuan finished speaking, he was interrupted by Rich Frick.
"Of course I know this, but based on historical proton radius experimental data comparison, the traditional QED data correction range is limited to about 0.0012~0.0021, but your corrected QED number is much higher than this."
After hearing Rich Frick's words, other physicists in the venue immediately focused their attention on this part of the analyzed data.
"As expected of Rich Frick, this question hits the nail on the head."
"This is indeed a problem, but the problem is not very serious. Just bring the correction parameters back into the calculation and it will be fine. However, I am afraid that the proton's radius value needs to be adjusted."
"Perhaps as this stubborn old man Rich thinks, the large proton radius is the truth?"
"I always feel that there is something wrong here. The numerical correction is too outrageous. It is unlikely that this young reporter will make such a mistake. After all, he has solved a world-class conjecture and has excellent mathematical abilities."
On the podium, Xu Chuan's expression did not change much, and he even showed a slight smile.
This smile stunned Rich Frick, who was standing in the venue waiting for an answer. He didn't understand why he could still smile when facing a fatal question.
"Professor Rishi's question is very meaningful. My correction of the incomplete qed value of the energy level of the hydrogen atom is indeed beyond the previous values, but I will prove to you why I do this."
Xu Chuan smiled, stretched out his hand to control the computer on the podium, turned off the projected ppt report, and reopened a demonstration data.
"Please look here, please allow me to make temporary changes or add to the report content in the coming time."
In the venue, everyone became a little commotion after hearing Xu Chuan's words that changed the content of the report.
The staff included all frowned slightly, not knowing what the young reporter was doing.
"For a long time, we have mainly relied on two methods to measure the charge radius of protons."
"One is the energy spectrum measurement of hydrogen-like atoms, and the other is the proton scattering experiment of electrons."
"In the past, we used these two methods to obtain a relatively accurate proton radius data of 0.87 femtometers. This is the number we have always used in the past, and it has been recognized until 2010."
"But in 2010, physicists at the Max Planck Institute for Quantum Optics used mesonic hydrogen, replacing the electron orbiting the nucleus with a meson, and got an even smaller number, 0.841 femtometers."
This chapter is not finished yet, please click the next page to continue reading the exciting content! "This is the origin of the mystery of the proton radius. I won't go into details on this point. I believe everyone sitting here has it.
What you know.”
"Fundamentally, we want to understand what all the laws of physics are, and if there's a difference that no one can explain, we risk never understanding the laws of physics."
"But today, I'm here to explain the issues that cause this difference."
As soon as these words came out, there was an uproar in the venue.
Explain the mystery of the proton radius? Has he found the problem?
How is this possible? Countless physicists have worked together for several years to no avail. If it were really so easy to solve, would this problem still exist today?
In the audience, Cao Hongyuan from the Chinese University of Science and Technology was stunned for a moment after hearing Xu Chuan's words.
He originally thought that today's report would end with the completion of a calculation method for the proton radius and the report on the experimental data of the atomic charge radius.
Unexpectedly, the appearance of the bad old man Rich Frick directly took the situation to another aspect.
Solving the mystery of the proton radius. Can it really be done?
Did he really find the problem, or did he forcibly concoct a theory in order to respond to Rich Frick's question?
Thinking about it, he turned his head and glanced at Chen Zhengping, who was sitting next to him.
As the mentor of the young man on the stage, he should know something in advance, right?
But what is surprising is that Chen Zhengping's expression is almost exactly the same as before, with doubts, surprise, and even a hint of worry on his face.
It seemed that the unexpected situation also exceeded his expectation.
Among the entire venue, the only ones who could remain calm were Edward Witt, Frank Wilczek and Xu Chuan's project team who knew this information in advance.
.......
Xu Chuan ignored the commotion in the audience and continued his report.
"..."
"The traditional 'Electron Proton Scattering Atomic Charge Radius Experiment' uses a metal container as the experimental device for the hydrogen atom cloud due to the limitations of the equipment. After the high-energy electron beam enters the experimental equipment, when it collides with the hydrogen atom cloud,
It will cause scattering interference with metal.”
"Judging from past experiments, the scattering interference caused by high-energy electron beams and metal containers is very weak, so weak that it hardly affects the calculation of the proton's radius data. Therefore, this part of the data is ignored in the calculation."
"And after canceling the metal container, an exception occurred..."
"Judging from the experimental data of this proton radius measurement, the scattering interference caused by high-energy electron beams and metal containers is far more powerful than previous calculations."
"The reason it was ignored is that a large part of its interference was converted into energy level data, and this part of the data was not calculated by previous physicists."
"Therefore, the final calculated proton radius is larger than the correct radius."
"I verified this using some previous historical observation data."
"Everyone can look at these data. Through calculation, it can be clearly found that the experimental energy level data without using metal containers as hydrogen atom cloud equipment is significantly higher by 1.7 to 1.8 energy levels."
"From this, we can completely confirm..."
"The scattering interference caused by high-energy electron beams and metal containers is indeed stronger than previously calculated by physicists, and is strong enough to affect the proton's radius data."
"And the actual value of the proton's radius is much smaller than the previous measured value."
"Perhaps, when the experimental equipment is advanced enough in the future, the value of 0.831 can be further reduced."
"That's my additional report."
"The report is complete, thank you all for your patience."
...........
There was silence in the venue.
Everyone was shocked by Xu Chuan's report.
No one spoke, even Rich Frick, who asked the question, stood silent.
Because part of the scattering interference caused by the high-energy electron beam and the metal container was converted into energy level data, did it eventually lead to an error in the calculation of the proton's radius?
If this is the case, many physicists in the physics community have made serious mistakes on the issue of the size of the proton for a long time.
Although I don't want to admit this problem, the data does not lie.
Those calculated accurate data all point to this serious problem.
Perhaps, the young man on the podium really might be right.
Rich Frick stood silent.
Although he was very reluctant to admit this in his heart, he could not find a new loophole to refute, whether it was a theoretical point of view, or data analysis and calculation, he could not find a loophole.
On the contrary, his previous doubts about the other party were more like an accelerant, making the other party fly higher.
.........
On the podium, Xu Chuan waited quietly for a while. No one raised their hands to ask questions.
The acceptance person came to the podium and gave a brief summary of the report. He thanked the scientific researchers who participated in the project and also thanked Xu Chuan for the new discoveries he brought to the physics community.
We also encourage other physicists and research institutions to verify the mystery of the proton radius, hoping that this problem can be completely confirmed and solved in the near future, and more accurate proton radius data can be obtained.
When the staff announced that the report meeting was over, the physicists in the venue also left the auditorium one after another.
Xu Chuan came down from the podium, and members of the group immediately swarmed over.
"Well done! Xu!" Athol Murphy, an intern from MIT, came up excitedly and punched Xu Chuan, hitting the chest and making a dull sound.
"Xu, you have solved a super difficult problem in physics. I believe you will have a share of next year's Dirac Medal and Einstein Prize."
Xu Chuan smiled and said: "It's not me, it's us together. Your contribution is equally important. I will add your names to the paper. I hope it can be helpful to you."
Hearing this, the group members all had bright smiles on their faces. Nothing makes people happier than this.
A paper can usually have 3-6 authors, first author, corresponding author, second author, third author, etc. Different authors have completely different weights in the paper.
This time the mystery of the proton radius is solved. The first work and the corresponding author are undoubtedly Xu Chuan's, but the second and third works are equally ignored by the team members.
After all, this is a well-known problem in the physics world. It is currently the most cutting-edge issue in the particle physics world. Its importance can be said to be second only to the discovery of the pentaquark particle last year.
If there are no new important discoveries this year, then the solution to the mystery of the proton's radius will be the most significant achievement this year.
Being able to sign on such a paper, even if it is a second or third author, will be of great help to their future development.
With such a resume, it will be much easier for them to find jobs or apply for scientific research experiments or scientific research equipment in the future.
For example, Nunnally Kessler from the University of Göttingen will undoubtedly have her share as a formal researcher, and may even advance directly from next year to this year.
Especially for Jonah Creel, the youngest member of the group (leaving aside Xu Chuan), he is still studying for a PhD at Karlsruhe Institute of Technology.
On the one hand, I came to the internship for study, and on the other hand, it was for my graduation thesis.
And now, his goal has been achieved.
Given the importance of the problem of the proton radius mystery, even if he could only make three papers in the paper, it would be enough for him to graduate from any school.