…Furthermore, in 1977, an experiment using the proton accelerator at Fermilab discovered a meson (upsilon Υ) even heavier than the J/ψ particle, suggesting the existence of a fifth type of quark. This quark is called the bottom quark or beauty quark, and is represented by the symbol b. The sixth type, the top quark (symbol t), was discovered in 1994. … *Some of the terminology that mentions "bottom quark" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…さらに77年,フェルミ国立加速器研究所の陽子加速器を使った実験で,J/ψ粒子よりさらに重い中間子(ウプシロンΥ)が発見され,5番目の種類のクォークの存在が要請された。このクォークはボトムクォークbottom quark,あるいはビューティークォークbeauty quarkと呼ばれ,記号bで表される。6番目のトップ・クォークtop quark(記号t)は1994年に発見されている。… ※「bottom quark」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 |
<<: bouchée (English spelling)
A social thinker and democratic socialist of the ...
An old town in Date County in the eastern part of ...
…It is found in the wild along the Mediterranean ...
A traitor to the Sui Dynasty in China. Son of Yan...
An end component of garnet solid solution. Mg 3 Al...
Iron-chromium and iron-chromium-nickel alloys con...
〘 noun 〙 Baseball played by amateurs. ※The People ...
A transept is a secondary nave in a Christian chu...
This turtle is classified as a reptile in the genu...
A perennial herb of the Santalum family. It grows ...
A type of substance that exhibits ion exchange pr...
…It is obtained by treating itaconic anhydride, w...
A Dutch medicine doctor of the late Edo period. A...
...According to old maps from the early 17th cent...
Also known as the Caucasus Mountains. A folded mou...