When beauty quarks decay, the daughter particles produced sometimes include a pair of what are known as charged leptons.
当美夸克衰变时，产生的子粒子有时包含一对所谓的带电轻子。
| 单词 | Beauty Quark |
| 释义 |
Beauty Quark
原声例句
经济学人（汇总） When beauty quarks decay, the daughter particles produced sometimes include a pair of what are known as charged leptons. 当美夸克衰变时，产生的子粒子有时包含一对所谓的带电轻子。 经济学人（汇总） The details are arcane. But they concern particles called beauty quarks which, themselves, form part of other particles called B-mesons. 细节晦涩难懂。但他们关注的是一种叫做“美夸克”的粒子，这种粒子本身是另一种叫做“B-介子”的粒子的一部分。 当月 VOA Special English Other attempts to better understand antimatter include using CERN's Large Hadron Collider to investigate unusual particles called " beauty quarks." 更好地了解反物质的其他尝试包括使用欧洲核子研究组织的大型强子对撞机来研究被称为“美夸克”的不寻常粒子。
英语百科
Bottom quarkThe bottom quark or b quark, also known as the beauty quark, is a third-generation quark with a charge of −⁄3 e. Although all quarks are described in a similar way by quantum chromodynamics, the bottom quark's large bare mass (around 4.2 GeV/c, a bit more than four times the mass of a proton), combined with low values of the CKM matrix elements Vub and Vcb, gives it a distinctive signature that makes it relatively easy to identify experimentally (using a technique called B-tagging). Because three generations of quark are required for CP violation (see CKM matrix), mesons containing the bottom quark are the easiest particles to use to investigate the phenomenon; such experiments are being performed at the BaBar, Belle and LHCb experiments. |
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