Editing 2351: Standard Model Changes
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In reality, the original quark model proposed by Murray Gell-Mann included only three quarks, with the "strange" quark so named because the particles that contained them were ''strangely'' long-lived relative to their masses. The "charm" quark was so named when it was proposed because it brought a "charming" symmetry to the weak interaction, which we now understand is because it completes the second generation of quarks, along with the strange quark. When a third generation of quarks was proposed, they were called top and bottom by analogy to the up and down quarks (which are so named because of the {{w|isospin}} they carry), though the names 'truth' and 'beauty' were briefly in competition, and colliders working with B quarks are sometimes even now called "{{w|B-factory|Beauty Factories}}". | In reality, the original quark model proposed by Murray Gell-Mann included only three quarks, with the "strange" quark so named because the particles that contained them were ''strangely'' long-lived relative to their masses. The "charm" quark was so named when it was proposed because it brought a "charming" symmetry to the weak interaction, which we now understand is because it completes the second generation of quarks, along with the strange quark. When a third generation of quarks was proposed, they were called top and bottom by analogy to the up and down quarks (which are so named because of the {{w|isospin}} they carry), though the names 'truth' and 'beauty' were briefly in competition, and colliders working with B quarks are sometimes even now called "{{w|B-factory|Beauty Factories}}". | ||
− | Randall likely applied "left" to "strange" and "right" to "charm" simply due to the placement of the particles in the table: In the American English vernacular, the phrase "left and right" is more common than "right and left", in the same way that "top and bottom" is more common than "bottom and top", and "up and down" is more common than "down and | + | Randall likely applied "left" to "strange" and "right" to "charm" simply due to the placement of the particles in the table: In the American English vernacular, the phrase "left and right" is more common than "right and left", in the same way that "top and bottom" is more common than "bottom and top", and "up and down" is more common than "down and bottom". So he placed "left" above "right" to match the ordering of the other quark generations. |
=== Leptons === | === Leptons === |