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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.

In this case we study how the B meson decays into four other subatomic particles – a kaon, a pion and two muons.

From Science Daily • May 26, 2026

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

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