After some rain and rain, Chen Zhou and Yang Yiyi stayed warm for a while before getting up.

Although it delayed the time to get up, it can be seen from Chen Zhou's expression.

He was still very satisfied.

Because my parents were there, the depression of sleeping in separate rooms disappeared from last night to this morning.

After breakfast was settled, Chen Zhou and Yang Yiyi wandered around Yan University campus for a while, then went straight back to the dormitory.

It’s not for anything else, Chen Zhou has not much time left.

And Yang Yiyi also has to prepare some information in advance for LIGO's research topics.

So, the two people who returned to the dormitory sat down at the desk in a tacit understanding.

The feeling of being with him once again appeared in Chen Zhou's heart at this moment.

Subconsciously, Chen Zhou turned his head and looked at Yang Yiyi.

Yang Yiyi seemed to feel something, and turned her head to look at Chen Zhou.

The two looked at each other and smiled, everything was silent.

Chen Zhou's research on topics related to neutrino oscillation has also entered the most critical point.

In fact, the discovery of neutrino oscillation is already a proven objective fact.

Whether it is solar neutrinos, atmospheric neutrinos, or the third reactor neutrino oscillation discovered in China.

The neutrino oscillation phenomenon has been completely discovered from three angles, complementing each other.

The 2015 Nobel Prize in Physics commended the discovery of neutrino oscillation, thus confirming that neutrinos have mass.

This is also the fourth time that he has won the Nobel Prize in Physics in the field of neutrino research so far.

It is worth mentioning that the basic discoveries and research of neutrino oscillations reveal new frontiers that may far exceed the standard model.

The 2016 Basic Physics Breakthrough Award is awarded to seven leaders studying neutrino oscillations and five research teams they lead.

Among them are Professor Wang of the Institute of High Energy in China and the neutrino experimental team of Daya Bay, China led by him.

But this does not mean that there is nothing to discover in the study of neutrino oscillation.

On the contrary, the research on topics related to neutrino oscillation has just begun.

Among the topics related to neutrino oscillation, it is also recognized by scholars of high-energy physics research. The next Nobel Prize-level work will likely be about the discovery of neutrino CP failure.

And in the neutrino-free double β decay experiment, it may be confirmed for the first time that the neutrino is a Majorana neutrino, that is, Majorana neutrino.

But in fact, there are still many problems that need to be solved in these two major directions.

Although the phenomenon of neutrino oscillation has been discovered, the symbol of Δm232 cannot be given due to atmospheric neutrino experiments.

Therefore, the mass order of m3 and m2 is not clear.

Similarly, the symbol of Δm231 cannot be measured in experiments.

This means that the mass level of neutrinos cannot be determined.

The quality order of neutrinos is the first problem that must be solved if the subsequent research on neutrino oscillation is carried out.

Then, the CP destruction effect of neutrinos and the neutrino-free double β decay experiment.

CP destruction will cause different probability of positive and negative neutrino oscillation, which is likely to be related to the "mystery of the disappearance of antimatter" in the origin of the universe.

The order of mass affects the oscillation probability and the measurement of CP failure.

It also determines the prospects of the neutrino-free double β decay experiment.

In addition, there is also the absolute mass problem of neutrinos, which is the experiment of Chen Zhou first participating in CERN to find dineutrinos.

Currently, only the upper limit of the mass of neutrinos is given in experiments, but the mass of neutrinos cannot be accurately determined.

Although as the experimental measurement accuracy increases, the upper limit of the absolute mass of neutrinos will be further lowered.

However, only by truly finding the triple neutrino can we determine the mass of the neutrino in an objective way.

This is also one of the core points of Chen Zhou's current neutrino oscillation related topics.

One of the reasons is that Chen Zhou is not limited to the search for dineutrinos.

Since there are so many unsolved problems in the field of neutrino research.

Even the study of neutrinos is likely to reveal the mysteries of the universe.

Chen Zhou naturally would not let it go, this new physics hidden behind the neutrinos.

In fact, if we talk about it in a big way, the research on topics related to neutrino oscillation is indeed even more exciting.

The problem of the severity of the mass state of the three neutrinos with different mass states will help determine the unified way of the great unified force at the beginning of the Big Bang.

The oscillation of neutrinos is likely to help understand the question of why matter and antimatter are asymmetric in the universe.

Whether the so-called fourth inert neutrino exists is likely to solve the mystery of dark matter.

How about it?

Doesn't it sound awesome?

That's right, Chen Zhou was the same, this was how he got into the trap at the beginning.

Then, I was trapped by the related topics of neutrino oscillation for so long.

As time goes by, Chen Zhou and Yang Yiyi are immersed in their own research state.

The draft paper that was previously moved to Chen Xiao's room was also moved back by Chen Zhou.

And new thicknesses are added.

"The law of neutrino oscillation is determined by 6 parameters, including 3 neutrino mixing angles θ12, θ23, θ13, 2 mass square deviations Δm221, Δm232, and 1 charge parity phase angle δ...

”

"In these 6 parameters, the solar neutrino oscillation experiment determined one of the parameters, sin22θ12≈0.86, Δm221≈7.5×10^-5eV2..."

"The atmospheric neutrino oscillation experiment determined another set of parameters, sin22θ23≈1, Δm232≈2.5×10^-3eV2..."

"The Daya Bay experiment accurately measured the size of the neutrino parameter θ13 with a confidence level of more than 5 times the standard deviation, sin2θ13=0.092±0.016(stat.)±0.005(stat.)..."

"The six neutrino oscillation parameters have been measured, and only the CP failure angle δ is unknown..."

"However, because of the material effect of the sun's neutrino oscillation, it can be determined that the intrinsic state of neutrino mass m2 is heavier than m1..."

"But atmospheric neutrino experiments cannot give the symbol of Δm232, that is, it is not clear which one is heavier, m3 or m2..."

Chen Zhou recalled the content compiled in previous documents.

This is also the entire achievement achieved in the field of neutrino scientific research so far

And this is also the problem of neutrino mass order.

It is also a problem that Chen Zhou is currently making every effort to make breakthroughs.

After thinking for a while, Chen Zhou picked up the pen and started writing on the draft paper.

In fact, there is hope in the future that the neutrino charge-parametric phase and the neutrino oscillation experiment of neutrino mass sorting are already under implementation.

The experimental plan is also summarized from existing experience, including the research on anti-electron neutrino oscillation of reactors, the Jiangmen neutrino experiment in China and the RENO-50 experiment in South Korea.

There are the Hyper-K experiments in Japan that study accelerator neutrino oscillation and the DUNE experiments in the United States, as well as the Indian INO experiments in studying atmospheric neutrino oscillation, the K/ORCA experiments in Europe and the PINGU experiments in the United States.

However, the time required for these experiments is still very long.

Ideally, experimental research in this area should be completed within about the next five to twenty years.

This is also one of the reasons why Chen Zhou will continue to conduct research on neutrino oscillation related topics after returning to China.

He wanted to try to break through these neutrino oscillation-related issues from a theoretical level.

Then verify the theory from an experimental perspective.

Even if you have your own research team, you cannot find anything in the theory.

That can also give these planned experiments and some inspiration.

It was noon in a blink of an eye.

Yang Yiyi turned her head slightly, looked at Chen Zhou, and was about to call him to have lunch.

However, after seeing Chen Zhou's concentration, Yang Yiyi couldn't bear to interrupt him.

After thinking about it, Yang Yiyi went to the restaurant for dinner as before.

By the way, I bought a small rice bowl for Chen Zhou.

When Yang Yiyi returned to the dormitory again, Chen Zhou had already put down his pen and was frowning and thinking.

Hearing the sound of the door opening, Chen Zhou subconsciously turned his head and took a look.

Seeing that it was Yang Yiyi, his brows instantly stretched out and said with a smile: "Why are you going to have a meal? Don't you call me?"

Yang Yiyi chuckled and replied, "I'm afraid of interrupting your thinking. If it delays our great scientists, it will be troublesome."

Chen Zhou stood up, smiled and reached out and rubbed Yang Yiyi's head: "You are starting to tease me now."
To be continued...