| 释义 |
rishon Particle Physics.|ˈrɪʃɒn|
[a. Heb. ri'šôn first, primary; cf. -on1.]
A hypothetical particle postulated as a constituent of quarks and leptons.
1979H. Harari in Physics Lett. LXXXVIb. 84/2 The most economical set of building blocks consists of two J = 1/2 objects: one charged (Q = 1/3) and one neutral... We denote the charged particle by T and the neutral one by V. We name these particles ‘rishons’. [Note] ‘Rishon’ means first, primary (in Hebrew). 1979New Scientist 5 July 22/3 The charged leptons can consist of the three charged rishons (TTT) and the neutrinos of three neutral rishons (VVV), but the fractionally-charged quarks are made up of different combinations such as TTV or VVT. 1981Sunday Times 1 Mar. 15/2 The latest theory reduces all the matter in the universe to just two kinds of basic particles. Its originator—Haim Harari of the Weizmann Institute in Israel—has named the particles rishons, from the Hebrew for primary. |