An introduction to the quark model
An introduction to the quark model
An introduction to the quark model
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Few-charge systems His<strong>to</strong>ry of <strong>the</strong> <strong>quark</strong> <strong>model</strong> Mesons Baryons Multi<strong>quark</strong>s and o<strong>the</strong>r exotics Outlook<br />
Upsilon discovery<br />
In 1977, Lederman repeated Ting’s experiment with a more<br />
powerful beam and ano<strong>the</strong>r detec<strong>to</strong>r,<br />
<strong>An</strong>d discovered Υ and Υ ′<br />
Immediately interpreted as (b ¯ b)<br />
See chapter on mesons,<br />
Already Lederman noticed Υ ′ − Υ ψ ′ − J.ψ,<br />
<strong>An</strong>d asked local <strong>the</strong>orists about a potential such that all ∆E are<br />
independent of <strong>the</strong> reduced mass,<br />
<strong>An</strong>swer: V (r) ∝ ln r<br />
B mesons and B baryons also discovered,<br />
As well as Bc = (b¯c)<br />
JMR Quark Model