Great Country Academician

Chapter 252 Inert neutrinos

On the tenth day after New Year's Day in 2019, NTU's 2018 annual outstanding figure selection activity also began.

Taking time out in advance, Xu Chuan, dressed in formal attire, returned to his alma mater to participate in this very important event for colleges and universities.

In fact, most colleges and universities have award ceremonies such as Person of the Year.

Those who can win awards at this kind of award ceremony are either top students, or students who started their own businesses in school or those who have made certain achievements.

For students, this award is actually very good, and the gold content is also high. At least, if you find a job after graduation, this certificate can bring you a lot of improvement, and many companies recognize it.

When he was a freshman, he also received this award. The bonus was 15,000 yuan. Although it was not much, it was not bad for a student.

Whether it is used as living expenses or to do something you like, it is enough.

In addition to the bonus, what is more critical is the honor behind the bonus.

It should be known that the selection of outstanding figures of the year covers the three groups of "college students + graduate students + doctoral students".

In terms of the size of Nantah University, there are almost 40,000 students in the school and branch schools. The significance of standing out from the 40,000 students is far beyond the description of the bonus.

Just like the Fields Medal, although its prize money is only 15,000 Canadian dollars, the meaning behind this medal cannot be compared with 150 million Canadian dollars.

Like last year, this year NTU has selected ten people of the year.

After arriving at the school, Xu Chuan first greeted his acquaintances such as his tutor Chen Zhengping and Professor Zhou Hai from the School of Numerology, and chatted for a while outside the auditorium.

When Xu Chuan appeared on the podium, there was a commotion in the auditorium.

The students who came to the award ceremony did not expect this legendary god to appear here.

There were rustling sounds in the auditorium, and some students even raised their mobile phones to take pictures.

Regarding this scene, the college leaders and professors at the award ceremony all smiled.

This one is still welcome.

Nantah being able to produce such a top scholar is not only the honor of the school, but also the luck of Nantah.

At ten o'clock in the morning, the 2018 outstanding person selection activity officially started.

Looking at these young faces, Xu Chuan sighed inwardly.

Once upon a time, he was among this group of people, but now, he has stood on the stage to present awards to them.

I have to say that time passes really fast, and four or five years have passed in the blink of an eye.

The first person to accept the award was a graduate student from the Department of Physics.

As one of Nantah University's trump card majors, the achievements of this graduate student named 'Pan Xinghai' are outstanding even among a group of top academics.

As a key member, he has participated in many scientific research projects at the national level, senior officials, and projects entrusted by enterprises and institutions.

Published a total of six SCI papers in well-known international journals such as Physical Review X and Physical Review B during the university + postgraduate period.

Among them, three SCI journal papers are included as the first author, and one SCI journal paper is included as the second author (the first work of the supervisor), and the total impact factor of the included papers exceeds 30 points.

Such an achievement, put on a graduate student, can be said to be the best of the top students~ the monster student.

But it was just such a monster, when he was called onto the stage by the host, his face was full of excitement.

"Congratulations, classmate Pan."

On the podium, Xu Chuan, who was invited to present the awards, took the certificates and medals from the etiquette staff with a smile and sent them to the graduate student wearing thick black-rimmed glasses.

"God Chuan!"

Taking the award certificate with slightly trembling hands, the top student in the physics department held Xu Chuan's hand with both hands excitedly.

Xu Chuan coughed in embarrassment, and said, "Forget about God Chuan, it sounds awkward. I'm a professor at the school, just call me Professor Xu."

Pan Xinghai nodded excitedly, and quickly said, "Good Professor Chuan."

The corner of Xu Chuan's mouth twitched, the God of Chuan is gone, what the hell is this Professor Chuan, isn't it good to be called Professor Xu or Professor?

But he didn't say anything, and patted Pan's arm with a smile.

Speaking of which, this classmate Pan is a bit older than him, and seems to be in his twenties this year.

"Professor Chuan, yes, can I trouble you to sign it for me?" Pan Xinghai asked cautiously, excitedly, as if a fanatical fan saw his idol.

Xu Chuan nodded with a smile, groped around, found that he didn't bring a pen, and asked, "Of course, but do you have a pen and paper?"

Hearing this, Pan Xinghai was stunned for a moment, then quickly groped his body, and shook his head in frustration: "No."

He also didn't expect his idol to appear at today's awards ceremony, so he didn't bring a pen and paper with him.

Although there are schoolbags in the audience, it will be too late to go down to get them.

Just as he was regretting missing the signature this time, the etiquette staff at the side came up silently, handed Xu Chuan a pen and a notebook, and said softly by the way:

"Professor Xu, just sign on this. This book can be given to the winners. We have prepared one for each of us."

Seeing this, Pan Xinghai froze for a moment, his eyes brightened instantly.

Nantah is worthy of being his alma mater, that's what he thought of!

sharp!

On the opposite side, Xu Chuan was also stunned for a moment, but then he took the pen and paper from the other party's hand with a smile, opened the first page, and wrote on it:

"May your future journey have stars and seas in your eyes, thousands of hills and valleys in your chest, and flowers like brocades in your heart—Xu Chuan."

After writing a sentence in the notebook, Xu Chuan smiled and handed the notebook to the winner in front of him.

"Thank you, thank you professor!" Pan Xinghai excitedly held Xu Chuan's hand again. Obviously, the above words were written by him alone!

From today, this sentence is exclusive to him! His motto!

Xu Chuan smiled, pulled out his hand without any trace, and said with a smile, "Come on."

"I will." Classmate Pan Xinghai nodded excitedly, hesitated for a moment and then said, "Well, that, Professor Chuan, are you still accepting doctoral students?"

Xu Chuan said with a smile: "I'm afraid not for the time being. I have a lot of things on my hands recently, and I don't have time to take care of the students."

Hearing this, Pan Xinghai's eyes flashed a hint of disappointment. This was probably a tactful refusal, but he was not discouraged, and then asked, "Then, Professor Na Chuan, can I ask for an authoritative friend or contact information?"

Xu Chuan: "."

In the end, Xu Chuan still gave his prestige to this little fanboy. It is indeed true that he will not accept students in the near future.

Not to mention the new students, even the two students brought over from Princeton, he didn't care about them recently, and he doesn't know how they are doing, so he still needs to find a chance to take a test.

The second person to accept the award was a doctoral student from the Department of Astronomy.

As another trump card major, the Department of Astronomy of Nantah University is still quite good, and no one would object to saying that it is the first among domestic universities.

The resume of this doctoral student is also quite good. While leading the team to win the gold medal in the CAIC competition co-sponsored by the Huaguo Astronomical Society and the astronomy committee of the higher education institution, he also holds one SCI District II paper, three SCI area three papers.

You must know that water thesis in astronomy is difficult, especially in the current situation where large-scale astronomical facilities are generally lacking in China, it can be said that this student can still make such achievements, which can be said to be quite difficult.

What surprised Xu Chuan even more was that the winner's mathematics was quite good.

Among his three SCI area-3 papers, two of them are related to mathematics, and one of them is related to the extended application of Xu-Weyl-Berry theorem, which he won the Nobel Prize before.

I have to say that, as his alma mater, Nantah University has done a good job in keeping up with the latest cutting-edge scientific theories.

The subject of Computational Astronomy was set up the year before last. Although it is only included in the minor of Astronomy, it is already very good compared to other schools in China that have not been active.

Like the previous classmate Pan, this classmate Zhou was also very excited when he saw him, and he held his sign language as soon as he came up, and his sign language was amazing: "I haven't washed my hands for a week after shaking hands this time!"

Xu Chuan: "."

The staff on the side: "."

Fortunately, this classmate didn't have a microphone in his hand, otherwise he would have lost the right to choose a spouse directly in front of thousands of people in the auditorium.

According to the previous procedure, Xu Chuan took the pen and paper from the etiquette staff, wrote words of encouragement on the first page, and then gave it to the winner.

In the cyclical process of asking for signatures, writing signatures, and awarding awards, this year's selection of outstanding figures of the year is coming to an end soon.

It has to be said that Nantah University, as a top university in China, still has quite a lot of talents.

The ten winners each have excellent resumes. Xu Chuan also wished them a bright future in his notebook and greater achievements on the academic road.

At the invitation of the school leaders, they had lunch together at noon. To his surprise, he saw a familiar figure in the hotel.

"Long time no see, Brother Lin Feng. How have you been recently?" In the restaurant of Jinling Hotel, Xu Chuan smiled and greeted Lin Feng.

The last time the two said goodbye in Princeton, Senior Brother Lin and his little girlfriend hadn't seen each other for almost a year since they chose to return to China.

"Long time no see, Brother Chuan!"

Seeing Xu Chuan, Lin Feng walked up and gave him a warm hug: "Thanks to you, life at CERN is pretty good."

"It's just that when chatting over there, everyone's attention is often on you. For example, when introducing me, they will basically mention "this is Professor Xu Chuan's brother from the same school."

"You don't know, you are really popular in CERN now, and many people are studying the calculation method you created before. Including me, I also looked at it. Unfortunately, I am not good at mathematics, so I still can't figure it out."

Xu Chuan smiled and said, "Speaking of CERN, I haven't been there for a while, it's really a memorable day."

Lin Feng said with a smile: "Now we are also a member state of CERN, you can go there anytime."

Xu Chuan shook his head, skipped the topic and asked, "I'm afraid I don't have time for the time being. What is CERN researching recently?"

He is still clear about the CERN research in 2018, but after he stepped in and changed some things in the past two years, he doesn't know if there is any change in the arrangement there.

Lin Feng shook his head and said, "It's still the same. ATLAS and CMS spend most of their time studying the Higgs boson, and LHCb is looking for quarks."

"On the side of ALICE, I heard that some time ago they conducted a high-energy level collision experiment to simulate the original universe after the big bang and analyze the properties of the quark-gluon plasma."

"However, it seems that their luck is not very good. So far, nothing has been discovered."

Hearing this, Xu Chuan's heart moved, and he asked, "Did Hua Guo participate in ALICE's experiment?"

If it wasn't for Lin Feng, he almost forgot one thing.

In 18 years, he was a little famous in the physics world in his previous life. The reason was at CERN, because traces of the existence of inert neutrinos were discovered.

Neutrinos, also known as neutrinos, are a type of leptons and one of the most basic particles that make up nature.

It is small, uncharged, can pass through the earth freely, has a spin of 1/2, and has a very light mass, some of which are less than one millionth of an electron. It moves at close to the speed of light and interacts with other substances very weakly. Known as the "invisible man" in the universe.

It took more than 20 years for the physics community to predict its existence and discover it.

On November 23, 2013, scientists used particle detectors buried under the Antarctic ice to capture for the first time high-energy neutrinos originating outside the solar system.

Today, the physics community has confirmed that there are three different types of neutrinos discovered: electron neutrinos, muon neutrinos, and tau neutrinos.

However, in 1995, the LSND experiment in the United States proposed the "possible" existence of a fourth type of neutrino-inert neutrinos.

Inert neutrinos are another state of neutrinos, which involves some relationship between the particles.

Ordinary neutrinos, also known as active neutrinos, were first proposed by Austrian theoretical physicist Wolfgang Pauli.

They are found almost everywhere, and can be produced in the Big Bang, galactic activity, supernova explosions, the center of the sun and the interior of the earth, as well as in nuclear reactors and particle accelerators.

The inert neutrino is a hypothetical particle that has no reliable experimental evidence. It was first proposed by the Italian theoretical physicist Bruno Pontikov around 1968.

Refers to neutrinos that do not participate in the standard weak interaction process, and are therefore generally understood as a new type of particle beyond the three-generation lepton framework of the Standard Model.

Compared with ordinary active neutrinos, the discovery of inert neutrinos is also related to another kind of cosmic matter-dark matter!

Because theoretically, it does not participate in any interaction except gravity, so it is a candidate for warm dark matter.

If the existence of sterile neutrinos can be found, it can prove the existence of dark matter in the universe.

This is of great significance to the physics community.

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