Chapter 270 I Do Have Some New Ideas At 4 o'clock in the afternoon, the sun was still scorching and there were not many people on the street. Song Yao and Ding Jiahui also went into the shopping mall next to the milk tea shop. "Resurrected on the spot." Enjoying the cool breeze, Ding Jiahui let out a long breath and asked curiously, "Why is Xu Qingzhou so busy?" "Well, he said that the Xiaguo group and the American group are competing for the right to speak on the experiment, and the whole group is busy doing calculations day and night." Ding Jiahui was even more confused now. "Alas, I am still feeling proud of getting the scholarship, while my friends around me are already winning glory for the country." Song Yao has become accustomed to Xu Qingzhou's perversion. Well, it's perverted, whether it's in academics or in daily life. Thinking of this, she couldn't help but look at her feet again. I kind of miss that tingling feeling, and he won't be back for another month. "Yaoyao, Yaoyao?"
"Ok?" "What are you thinking about that makes you so absorbed?" Song Yao's ears felt a little hot, and she looked away and said, "I was thinking about what I wanted to say just now?" Reminded by Song Yao, Ding Jiahui also remembered that she had something to share, and said, "I want to say that there is another shocking news in the circle of high school classmates." Song Yao was not actually interested in these gossips, but seeing Ding Jiahui's mysterious look, she cooperated and asked, "What gossips?" Ding Jiahui said slowly: "You and Xu Qingzhou will get married after graduation." Song Yao stopped and looked at her with raised eyebrows. This seemed to be something everyone knew. "Well, it seems like nothing new. But it's still very exciting that the couple I was obsessed with has come together." Ding Jiahui seemed to have become the chatterbox she was in high school, talking non-stop. "It was just a rumor before, and didn't you two refute it at the class reunion? Now there are a lot of details, such as that you and Xu Qingzhou have bought a wedding house in Kyoto, and you will get the marriage certificate when you reach the age." "Two more years." "Oh, you really thought about it." "Everyone seems to have changed this summer. During the first summer and winter vacations, there were parties everywhere, sometimes with junior high school classmates, sometimes with high school classmates. It was so lively." "Now, the only call I receive is from a salesperson." On the 15th, at 8 . Swiss time, the Xia Guo group started its fourth major meeting. After five days of hard work, a draft of the analysis of the two-photon channel appeared in everyone's hands. After Academician Yang sat down, he said directly: "Everyone has finished reading the draft. Time is running out. Please make additional explanations on the contents of the draft first. Professor Cao, you can start first." “I went through the scheme carefully last night, and I think that in addition to the existing method on page 18, we can add a matrix transformation to correct for the nonlinear response of the detector or the uneven spatial resolution.” As he spoke, Cao Weijie walked to the whiteboard and quickly wrote down the formulas and steps. 20 minutes later, Cao Weijie finished speaking and it was the next person's turn.
Professor Gao shook his head and said, "I don't have any ideas. This is the best solution we can come up with in a short period of time." Chen Peipei, the second youngest girl in the Xiaguo group, shook her head: "I have nothing to add." Even her boss has no idea, what can she add? but Chen Peipei secretly glanced at the younger face opposite her. This junior fellow student should be about the same age as her. Then, only a professor named Qiu Peng made a supplement. Soon it was Wang Qiming's turn sitting opposite Xu Qingzhou. "Use an optimization algorithm, preferably gradient descent, to minimize the $\chi^45$ function on page 2 of the solution to find the optimal values of the parameters $\mu, \sigma, A$, and $\beta$." Wang Qiming opened his notebook and spoke slowly. Academician Yang turned to page 45, thought for a while, nodded, and said in a deep voice: "This plan is feasible, I will hand it over to Professor Wang." "No problem." Wang Qiming nodded with a smile. While Wang Qiming was talking, Xu Qingzhou also found the \chi^2 $ function, which belongs to the category of statistics, a form of statistical inference, and an important tool to assist in describing the signal shape of the Higgs particle decaying into two photons. It must be said that Wang Qiming does have some strength. Xu Qingzhou's eyes sank slightly, his thoughts drifting. He was not concerned about the other party's strength, but was thinking about another thing - how to correct the basic problem. He is not good at particle physics, but he is proficient in quantum mechanics. The wave-particle duality theory in quantum mechanics points out that particles have both wave and particle properties. This dual nature of particles is fully reflected in the study of the two-photon channel of the Higgs particle. From the perspective of quantum mechanics, the interference effect between signal and background is actually a manifestation of quantum interference. so. "Team Leader Shen." Academician Yang looked at Shen Yuanjie. Shen Yuanjie also shook his head. He was not very satisfied with the current analysis results, but there was no better way. "It's the same here. Although this model can avoid background contribution and is better than the German experimental group last year, it is not very efficient. Moreover, it requires multiple iterations. According to the current situation, it will take at least 7 days." Zhang Changqing sighed and said, "Unfortunately, what we lack right now is time." Xu Qingzhou was still thinking about the previous question and already had an idea. To overcome this problem, is it possible to accurately describe and predict this interference phenomenon by constructing a model that includes interference terms and using the superposition principle and probability amplitude addition rule of quantum mechanics? Good, that should be possible. Academician Yang looked at Xu Qingzhou and saw that he was frowning. He didn't know what he was thinking. He was about to interrupt him. Although he thought that the young man probably didn't have much to say, he still had to go through the necessary procedures. However, before he could speak, Wang Qiming said, "Xiao Xu, it's your turn to speak." Young people, you need to learn a lesson and be more serious during meetings. Wang Qiming snorted in his heart. Xu Qingzhou came back to his senses. Seeing this, Wang Qiming narrowed his eyes and continued, "Although Xiao Xu is young, he has a good knowledge of mathematics. He has broken the age record of the participants in the Xia country group. Judging from your appearance, you should have some good ideas. Tell us about them."
We are in a foreign country and we are all from the same research group. We cannot do anything excessive, otherwise our reputation will be ruined. But it is okay to be a little disgusting with language. Zhang Changqing spoke up for Xu Qingzhou, "Junior brother must be tired. He deserves credit for making this large model in the proposal." Academician Yang frowned, but didn't say anything, or it was difficult to speak, so he could only turn his head and look at Xu Qingzhou. Wow, flattery to death. Xu Qingzhou immediately understood Wang Qiming's plan, shook his head in his heart, and smiled softly, "I do have some new ideas here." As he spoke, he stood up and wrote a row of formulas in the lower right corner of the third whiteboard: [B(x;\beta_i，\lambda_j)= P(x;\beta_i)+ E(x;\lambda_j (End of this chapter)