1936/kloc-0 was born in the United States on October 27th, and returned to China with his parents three months later.
65438-0956, studying in the Department of Physics and Mathematics, University of Michigan.
1960 master.
1962 received his doctorate and worked in CERN, Switzerland for one year.
From 65438 to 0964, he worked at Columbia University.
1976 won the nobel prize in physics.
Chinese American physicist. Born in Rizhao City, Shandong Province, China,193665438+1October 27th, Michigan, USA, he spent his middle school days in Taiwan Province Province. Ding Zhaozhong entered the University of Michigan on 1956, received his master's degree on 1960, and received his doctorate on 1962. 1963- 1964 worked in CERN, 1964- 1967 worked in Columbia University. From 1967, Professor of Physics Department of Massachusetts Institute of Technology, and from 1977, he was elected as an academician of American Academy of Sciences.
Ding Zhaozhong is mainly engaged in high-energy experimental physics, elementary particle physics, quantum electrodynamics and the interaction between γ radiation and matter. His most outstanding contribution is that in 1974, he and Li Xite independently discovered the J/ψ particle. For this, both of them won the 1976 Nobel Prize in Physics.
1In the summer of 972, the Ding Zhaozhong experimental team used the proton accelerator of Brookhaven National Laboratory in the United States to find long-lived hitting particles with the mass between1.5×109 ev and 5.5×109 ev. 1974, they discovered a long-lived hitting particle (energy is 3. 1× 109eV) whose mass is about three times that of protons. When publishing this discovery publicly, Ding Zhaozhong named this new particle J, in which "J" is similar to the Chinese character "D", indicating that it was discovered by China people. At the same time, American Richter discovered this kind of particle and named it ψ particle. Later, people called this particle J/ψ particle. J/ψ particles have peculiar properties, and their life span is 5000 times longer than expected. This shows that it has a new internal structure, which can't be explained by three kinds of taste quarks known at that time, and it needs to be explained by introducing a fourth kind of quark-charm quark. The discovery of J/ψ particles greatly promoted the development of particle physics.
In addition, Ding Zhaozhong discovered the phenomenon of three jets in the summer of 1979 through the physical experiment of high-energy electron-positron collision, which provided experimental basis for the existence of gluons and quantum chromodynamics. His experiments on the interference effect of electromagnetic action and weak action at high energy provide experimental basis for the unified theory of weak electricity. Starting from 198 1, he organized and led an international group-L3 group, with nearly 400 physicists from about 13 countries including China. High-energy physics experiments were carried out on CERN's high-energy electron-positron collider LEP to find new basic particles and new phenomena in particle physics.
Ding Zhaozhong is keen on training high-energy physics talents in China, and often selects young scientists from China to work in the group he leads. He is an honorary professor of China University of Science and Technology and a member of the Academic Committee of Institute of High Energy Physics, Chinese Academy of Sciences.
A few days ago, the 2005 World Physics Year was launched in Europe. He is leading 58/kloc-0 physicists from 43 first-class universities and research institutes in the United States, France, Germany and China 14 countries to explore new substances and antimatter in the universe on the world's strongest electron-positron collider built in Geneva.
Ding Zhaozhong (Ding Zhaozhong 1936~ ~). Experimental physicist. My ancestral home is Rizhao, Shandong. 19361was born in Ann Arbor, Michigan, USA on October 27th, and returned to China with his parents three months later. I have been to many places in China with my parents from 1936 to 1949. He had no formal education in his childhood, but he was exposed to the culture, history and dialects of different provinces and listened to the discussions of many scholars who often went to his home. From 65438 to 0949, Ding Zhaozhong entered Jianguo Middle School in Taiwan Province Province and received a strict education. He did well in math, physics and history. 1956 went to the university of Michigan, USA, and studied in the department of physics and mathematics successively. 1960 got the master's degree, 1962 got the doctor's degree in physics. 1963, he got a scholarship from Ford Foundation to work at CERN in Geneva, Switzerland. From 65438 to 0964, he worked at Columbia University. From 65438 to 0965, he became a lecturer at Columbia University in new york. Professor from Physics Department of Massachusetts Institute of Technology 1967. He is an academician of the American Academy of Sciences. His research interests include high-energy experimental particle physics, including quantum electrodynamics, unified theory of weak current, and quantum chromodynamics. The Mark Jay experimental group led by him has worked in several international experimental centers.
Because of Ding Zhaozhong's contribution to physics, he was awarded the 1976 Nobel Prize in Physics, the American Lorenz Prize and the 1988 Tekasperry Prize in Science by the Italian government. He is an academician of the National Academy of Sciences, the American Academy of Arts, the Soviet Academy of Sciences, the Academia Sinica in China, and the Pakistani Academy of Sciences. He was awarded honorary doctorates by University of Michigan (1978), Chinese University of Hong Kong (1987), University of Bologna (1988) and Columbia University (1990). He is an honorary professor in China, Shanghai Jiaotong University and Beijing Normal University. He has won many medals, such as 1977 Erin Gold Award from American Society of Engineering Science, Leopard Excellence Award from taormina, Italy, and Science Gold Award from Brescia, Italy. He is also the editorial board of scientific journals such as Nuclear Physics B, Nuclear Instruments and Methods and Mathematical Modeling.
Second, scientific achievements.
1. Discovered Ding particles and won the Nobel Prize in Physics.
Since 1965, the experimental group led by Ding Zhaozhong has carried out a series of excellent experiments on quantum electrodynamics and vector mesons (ρ, φ, φ) at the electron synchrotron in Hamburg, Federal Republic of Germany (the beam energy is 7.5× 109eV), including the study of photogenerated vector mesons, the decay of vector mesons, and the experimental verification of vector-based models. Experiments also prove the correctness of quantum electrodynamics.
In the summer of 1972, Ding Zhaozhong experimental group used the 3.3× 10 10eV proton accelerator of Brookhaven National Laboratory in the United States to search for long-lived hitting particles with the mass between (1.5 ~ 5.5 )× 109EV.
1974, they discovered a long-lived hit particle, whose mass is about three times that of protons (3. 1× 109eV). When publishing this discovery publicly, Ding Zhaozhong named this new particle J. The shapes of J and D are similar, which means that this particle was discovered in China. At the same time, American B. richter also discovered this kind of particle and named it ψ particle. Later (1975), people called this kind of particle J/ψ particle. J/ψ particles have peculiar properties, and their life span is 5000 times longer than expected. This shows that it has a new internal structure, which cannot be explained by the known three-flavor quarks at that time, and it needs to be explained by introducing the fourth quark-charm quark. The discovery of J/ψ particles greatly promoted the development of particle physics. For this reason, Ding Zhaozhong and Li Xite both won the 1976 Nobel Prize in Physics.
2. Ding Zhaozhong's research focuses on experimental particle physics, quantum electrodynamics and the interaction between light and matter. Up to now, his major academic contributions are: (1) the discovery of anti-deuterium; (2) In the past 25 years, a series of experiments have been carried out to examine quantum electrodynamics, which show that electrons, muons and τ-ons are point particles with a radius less than 10- 16 cm; (3) the experiment of accurately studying vector mesons; (4) Studying the photogenerated vector mesons and confirming the similarity between photons and vector mesons; (5) the discovery of J particles; (6) Study on the generation of muon pairs; (7) Discovery of gluon injection; (8) Systematic study of gluon physics; (9) The accurate measurement of muon charge asymmetry shows the correctness of the standard electric weak model for the first time; (10) Within the framework of the standard model, it is confirmed that there are only three generations of neutrinos in the universe.