Quarks and antiquarks

Classical Mechanics Level 1

Which of these particles has charge + 1 3 ? +\dfrac13?

Top antiquark Up quark Bottom quark Strange antiquark

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July Thomas by July Thomas , 30, USA

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2 solutions

July Thomas
May 3, 2016

Relevant wiki: Standard Model

Up, top, and charm all have charge + 2 3 , +\frac23, so none of those or their antiparticles could have charge + 1 3 +\frac13 . Since the other three quarks (down, bottom, and strange) have charge − 1 3 , -\frac13, only their antiquarks have charge + 1 3 . +\frac13.

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I got the answer correct, but I can’t help but wonder. Would an anti-Bottom Quark also be a valid answer?

Fake Name - 1 year, 5 months ago

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It would, but the answer listed is a Bottom quark, not Bottom antiquark. I thought the same but I didn't read carefully.

Kevin Lin - 1 year, 4 months ago

(Would an anti-Bottom Quark also be a valid answer?) yeah!!!!!man

Gautham Sidharth - 1 year, 1 month ago
Luna Moon
Mar 14, 2021

since antiquarks have the opposite charge of (normal) quarks, therefore, the antiquark of the strange quark would be +1/3 , as the strange quark itself has a charge of -1/3

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