一种微粒的物理质量越大,就越需要更多的能量来证实其存在.于是,物理学者们有了建造一套机器设备的愿望,这套机器会比费密研究所的加速器的功能还要强大.但是在陈旧的重负荷机器的能量范围仍然会存在实际物理质量轻的西格斯介子.
Hence the desire of physicists to build amore powerful machine than Fermilab's Tevatron. But a really light Higgs mightbe within the old workhorse's energy range.
介子的两体非轻子衰变过程是粒子物理中一个很重要的研究课题，任何理论上的突破都会引起广泛的关注。
Studying the non-leptonic decay of B meson is an important task in particle physics, and any breakthrough in theory may take new blood to this field.
介子任一种具有较强相互作用力的亚原子粒子群，由一夸克与一反夸克构成，并具有通常介于轻子和。
Any of a family of subatomic particles that participate in strong interactions, are composed of a quark and an antiquark, and have masses generally intermediate between leptons and baryons.
在第五章中我研究了轻标量介子。
介子轻子族中的一种基本微粒(非介子)，其质量为电子的209倍，是一种负电荷，平均寿命为2。
An elementary particle in the lepton family (not a meson), having a mass209 times that of the electron, a negative electric charge, and a mean lifetime of2.2? 0-6 second.
介子轻子族中的一种基本微粒(非介子)，其质量为电子的209倍，是一种负电荷，平均寿命为2。
An elementary particle in the lepton family (not a meson), having a mass209 times that of the electron, a negative electric charge, and a mean lifetime of2.2? 0-6 second.
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