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B meson

American  

noun

Physics.

  1. a meson composed of a bottom quark and an up or down antiquark or of a bottom antiquark and an up or down quark.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Belle II experiment in Japan, which is dedicated to investigating B meson decays, is also gathering new evidence.

From Scientific American • Nov. 14, 2022

The “b” stands for beauty — and for the B meson, a subatomic particle that is crucial to the experiment.

From New York Times • Dec. 21, 2018

Hicheur himself is giving a talk on the properties of a kind of particle called a charmed B meson.

From Nature • Dec. 12, 2016

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.