- #1
edguy99
Gold Member
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In list of Mesons like this you see charm/anti-charm, strange/anti-strange and bottom/anti-bottom. You don't see up/anti-up or down/anti-down. Instead you see up/anti-down or (up/anti-up and down/anti-down) in supposition.
Why no down/anti-down meson?
Why no down/anti-down meson?