at.midnight
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What does it mean by virtual quark anti-quark pairs? I thought a proton was a hadron not a meson with quark and anti-quark combinations? Please could someone help clarify this? Thank you!

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MacsenT
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i think it is referring to the exchange particle of the strong nuclear force which is the pion which is made up of a quark and an antiquark, would make sense for it to be inside a baryon because it is what holds them together. by 'virtual' it just means it is an exhange particle aka gauge boson
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MacsenT
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(Original post by MacsenT)
i think it is referring to the exchange particle of the strong nuclear force which is the pion which is made up of a quark and an antiquark, would make sense for it to be inside a baryon because it is what holds them together. by 'virtual' it just means it is an exhange particle aka gauge boson
the pion is has charge +1 , 0 or -1 and all have zero strangeness, they can contain strange quarks but since it is a quark and anti quark pair the strangeness cancels out
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a8i
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(Original post by at.midnight)
What does it mean by virtual quark anti-quark pairs? I thought a proton was a hadron not a meson with quark and anti-quark combinations? Please could someone help clarify this? Thank you!

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a proton is a hadron, which consists of three quarks, but the exchange particle for the strong nuclear force between particles is a pion, which is made up of a quark anti-quark pair. It is virtual because they aren't detected directly.
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