penguin diagram

短语

词形变化

penguin diagrams 复数 penguin diagrams

释义与例句

n.
  1. 1.

    A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction.

    物理

词源

Coined by John Ellis in 1977, based on the shape of the diagram and inspired by a bet made with Melissa Franklin to put the word "penguin" in his next paper.

来源：wiktionary