Chapter 269 Even I envy myself
Xu Qingzhou was used to being hated.
Scientists are human beings, and they have emotions and desires, and they will always have their own selfish motives. Especially in Xia State, the interpersonal relationships in the department are a bit complicated, and many people spend more time on power struggles than on experiments.
Just because you're used to it doesn't mean you can tolerate it.
In the face of strong strength, everything is just a cloud. For example, the person who competed with him for the leadership of the laboratory ended up blowing him up.
Seeing Xu Qingzhou's silence, Zhang Changqing thought he was worried and said comfortingly: "Junior brother, don't worry, everyone has a quota for Peking University and the Academy of Sciences. It is everyone's default. Professor Wang is just worried."
"When you get more contact with society, you will find that such things are actually normal."
"Thank you, senior brother, I understand." Xu Qingzhou nodded slightly.
"Let's go, the meeting will start soon."
"Okay."
The two returned to the conference room.
After everyone arrived, Academician Yang continued his analysis, reviewed all the information, and assigned tasks.
Academician Yang and others are responsible for screening data, designing plans, and focusing on solving basic problems during the experiment. Xu Qingzhou and Zhang Changqing, along with deputy team leader Shen Yuanjie, are responsible for the calculation part and processing the data provided by Academician Yang and others.
Although Shen Yuanjie is not weak in physics, his main focus is in the field of mathematics. Not to mention Xu Qingzhou, who has long been associated with mathematics in everyone's mind.
Letting Zhang Changqing, an expert in experimental physics, join in to fill Xu Qingzhou's shortcomings.
Therefore, the Xia Guo Group was divided into two groups. The former was responsible for formulating the corresponding plan, and the latter processed the data and verified the data of the plan.
The program design is based on previous CMS experiments.
Of course, various data also come from previous experiments. The most reference is the experiment in July 2014. The experimental team used the H→double gamma decay path to measure the mass and production cross section of Higgs particles.
In the small conference room, Xu Qingzhou planned to read the experimental data carefully.
As early as 2013, researchers observed two-photon channels, {\displaystyleW^{+}W^{-}} channels, and {\displaystyleZZ} channels, confirming that the Higgs field can interact with bosons.
At the same time, the experimental team observed two other modes, {\displaystyleb{\overline{b}}} and {\displaystyleau^{+}au^{-}}, in 2014, confirming that the Higgs field can interact with the Mion interaction.
These are all verifications of the standard model.
Xu Qingzhou's mission this time is to start with the dual photon path.
In a small conference room.
Seeing that Xu Qingzhou had already started taking notes, Shen Yuanjie smiled softly: "Xiao Xu, this is your first time to participate in this kind of experiment. You may not have a clue at first. This is normal. Don't be stressed."
"Well, thank you, Team Leader Shen."
Xu Qingzhou nodded slightly. Although the deputy team leader worked at the Institute of High Energy Physics of the Academy of Sciences, he was also from Peking University, and his teacher was Academician Chu Jiangfeng of Peking University.
"Team Leader Shen, the data is all here."
Zhang Changqing came in with the data.
Shen Yuanjie is a man of action, and he is not sloppy in his words and actions. After receiving the data sent by Academician Yang and others, he quickly started working with Xu Qingzhou and others.
The first step is to use matrix and vector operations to reconstruct the trajectory of the particles based on the data.
This involves a lot of linear algebra knowledge, such as dot products, cross products of vectors and inverse operations of matrices, which is basically not difficult for Xu Qingzhou.
"Is there no problem here?" Shen Yuanjie asked.
Xu Qingzhou and Zhang Changqing both shook their heads.
Shen Yuanjie continued: "The next step is to fit the data and establish a mathematical model. This model must be able to describe the expected signal shape and background distribution of the Higgs particle decaying into two photons."
Xu Qingzhou thought for a while and said: "This model needs to be based on a parameterized function."
"That's right." Shen Yuanjie nodded with a smile. He was a little worried at first that Xu Qingzhou couldn't keep up, but found that he seemed to be worrying too much, "Okay, let's get started."
Yes, I have long heard that this young man is very powerful, but now I really feel it. After building the model, you need to define the objective function.
4 days flew by.
Xu Qingzhou devoted all his time to calculations. There was no other way. Time was urgent. The two groups were competing, and the opponent was an established power.
The advancement of Polignac's conjecture has temporarily slowed down.
In front of the whiteboard, three figures stood blankly, and the three whiteboards were filled with complex calculations.
The amplitudes of bosons and fermions are J(B)μν=i16π2kμkν-gμνk2)1ε and J(F)μνkν-gμνk2)1ε respectively.
There are also signal models composed of multiple Gaussian functions:
[[S(x;\mu_k,\sigma_k,A_k)=\sum_{k=1}^{N_{ext{sig}}}A_k\cdot\exp\left(-\frac]
"Hoo~"
Shen Yuanjie shook his head and said helplessly: "I'm stuck. Let's rest for 20 minutes to let the brain slow down."
"Yes, my brain is spinning."
Zhang Changqing slumped on the chair, his temples exposed, and stood up again and said: "Let's go, junior brother, go to the toilet."
"Go ahead, I'll make a call." Xu Qingzhou shook his head.
"Girlfriend?"
"Yeah."
Shen Yuanjie took a sip of tea and was a little surprised: "Xiao Xu has a girlfriend?"
He thought that Xu Qingzhou must have spent all his energy on his studies to achieve his current achievements.
"No, she is still the beauty of our school."
Zhang Changqing looked at Xu Qingzhou with some envy and said: "I have completed my studies and have a girlfriend. Junior brother, you are at the peak of your life."
Xu Qingzhou paused, thought for a moment, and said seriously: "Even I envy myself."
"."
No matter how busy he is, Xu Qingzhou has to report his situation to the school beauty Song, such as making a phone call during dinner in the afternoon or sending some scenery photos.
In Chengdu, at the entrance of a milk tea shop, Ding Jiahui held a cup of milk tea and looked helplessly at the beautiful girl who was leaning on the railing and talking on the phone.
This sister of mine is really beautiful, especially at this time, when her usual aloofness has dissipated, and there is a faint smile on her lips.
She clenched her chin, looking a little confused.
A year ago, Yaoyao kept saying that she would not fall in love before graduating from college.
As a result, they have now come out to live with Xu Qingzhou.
She and Guo Ziyang actually became a couple.
Things are different and people are different.
Song Yao has been visiting her grandparents in the countryside for the past few days. She just came back today and was dragged shopping by Ding Jiahui. But as soon as the two met, Song Yao answered Xu Qingzhou's call.
"Well, take care of yourself, bye."
Looking at Song Yao who hung up the phone, Ding Jiahui breathed out and held Song Yao's hand: "You have finally finished talking."
"Xu Qingzhou was busy yesterday and didn't receive my call." Song Yao explained.
"Understood, today is to compensate you, Yaoyao, you have become a little woman."
Ding Jiahui really feels that Zhong Song Yao has changed a lot. The aloof Song school beauty before is gone forever.
Two girls carried milk tea and went to the mall next door.
(End of chapter)