也就是衰变成两个τ轻子或者两个底夸克（b quark），那么应该也能观察到Higgs粒子衰变成这些粒子。真的。
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b quark b 夸克
bottom quark b 夸克
B Bottom quark 夸克
The old linear accelerator at Stanford was repurposed, turning it from the machine that co-discovered a particle known as the charm quark (thus winning its operators a Nobel prize) into a factory for making particles called B mesons.
ECONOMIST: The arrow of time
B-meson, as the abbreviation suggests, is any meson that contains a bottom (or an antibottom) quark.
ECONOMIST: What��s the matter?
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