クラス
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PHY.F430

2

2020年度

1Q
シラバス更新日
2020年9月18日

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アクセスランキング
media

### 講義の概要とねらい

Hadrons are particles which interact with strong forces. Hadrons are grouped into baryons and mesons. Examples are proton, neutron and pion. Most of the visible mass in our universe is due to the hadron mass. In the lecture, it is explained that hadrons are composed of quarks and anti-quarks. The features of flavor and color charge are also explained. Explanation is given on the roles of gluons, the force carriers, based on Quantum Chromodynamics (QCD) which is the theory of strong interaction. The coupling constant of the strong interaction and asymptotic freedom, which is the outstanding feature of QCD, are explained. Chiral symmetry and its dynamical breaking are explained in the context of the mass generation of hadron. Effective models based on chiral symmetry for hadron physics are explained.

The purpose of the course is to let the students understand hadrons which constitute the present universe, and to understand quarks, gluons, and QCD which is the theory of strong interaction. Another purpose is to let the students know theoretical tools to study hadron physics.

### 到達目標

[Objectives] Students will understand the basics of hadron physics by taking this course. Students will understand the features of strong interaction, the description of hadrons based on quarks, and features of quantum chromodynamics.

[Topics] Strong interaction, symmetries in hadron physics, properties of hadron, quark model, quark flavors, generations, color charge, gluons, asymptotic freedom, elastic scattering and deep inelastic scattering, chiral effective theories, chiral symmetry, current algebra, hadron mass generation, etc.

### キーワード

strong interaction, quark model, flavor symmetry, chiral symmetry, baryons, mesons, color charge, gluons, quantum chromodynamics, asymptotic freedom, origin of mass, dynamical breaking of chiral symmetry, chiral anomaly, chiral effective theories.

### 学生が身につける力(ディグリー・ポリシー)

 ✔ 専門力 教養力 コミュニケーション力 展開力(探究力又は設定力) ✔ 展開力(実践力又は解決力)

### 授業の進め方

The lecture is given using slides with prints summarizing each topic.
Practical problems are given and students are required to solve them.

授業計画 課題

not specified

### 参考書、講義資料等

'Particles and Nuclei', B. Povh et al., Springer
'Elementary Particle Physics, volume 1 and 2', Y. Nagashima, WILEY-VCH,
'Quarks, Baryons and Chiral Symmetry', A. Hosaka and H. Toki, World Scientific

### 成績評価の基準及び方法

Quizzes and problems given during the classes. The quizzes are given in the response sheet given in the end of each class. The problems are written in handouts distributed at each class.

### 関連する科目

• PHY.F350 ： 原子核物理学
• PHY.F437 ： 原子核物理学発展
• PHY.F351 ： 素粒子物理学
• PHY.F436 ： 素粒子物理学発展

### 履修の条件(知識・技能・履修済科目等)

It is required that the students have enough knowledge on quantum physics.

### その他

The lecture will be given in English.