Quark Confinement

Japanese: クォークの閉込め - くぉーくのとじこめ
Quark Confinement

…In other words, quarks exist inside elementary particles, but cannot come out. This is called quark confinement. In addition to u and d, there is the slightly heavier s quark, whose charge is -1/3. …

From [Elementary Particles]

...These types of quarks are called flavors.
[Quark Confinement]
The quark model, in which all hadrons are made from quarks, appears to have been a great success so far, but it also contains a great difficulty: quarks cannot be extracted by themselves.

From [Elementary Particle Model]

...In group theory, the rule of irreducible decomposition of product representations, x3 = 1 + 8, 3 x 3 x 3 = 1 + 8 + 8' + 10, tells us that mesons belong to one or eight dimensions, and baryons belong to one, eight or ten dimensions. Because quarks as fundamental particles cannot exist alone (known as quark confinement), all information about quarks is indirect in some sense. However, today it is believed that there is enough data to prove the correctness of the quark model, and quarks are accepted as real things. ...

*Some of the terminology that refers to "quark confinement" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…すなわちクォークは素粒子の内部には存在するが,外には出てこない。これをクォークの閉込めという。 u,dのほかに少し重いsクォークがあり,その電荷は-1/3である。…

【素粒子】より

…これらクォークの種類をフレーバーと呼ぶ。
[クォークの閉込め]
 クォークからすべてのハドロンがつくられるというクォーク模型は,いままでのところ非常に大きな成功を収めているように見えるが,実はまた非常に大きい困難をも含んでいる。それはクォークが単独ではどうしても取り出せないという事実である。…

【素粒子模型】より

…群論的には×3=1+8,3×3×3=1+8+8′+10という積表現の既約分解則で中間子は一または八次元,バリオンは一,八または十次元のどれかに属することがわかる。 基本粒子としてのクォーク自身が単独では存在しえない(クォークの閉込めという)という事情があるため,クォークに関する情報はある意味ですべて間接的なものである。しかし,今日ではこのクォーク模型の正しさを証拠だてるのに十分なデータがそろっていると考えられており,クォークは実在のものとして受けとられている。…

※「クォークの閉込め」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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