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<eqnpairs>
  <author></author>
  <institution></institution>
  <comments></comments>
  <background></background>
  <template id='extended hexagonal jigsaw 30' left-margin='15.00' top-margin='15.00' right-margin='15.00' bottom-margin='15.00' width='210' height='297' scale='1.00' orientation='portrait'/>
  <gui-settings>
    <active-view view-id='input'/>
    <active-option view-id='backSide' option-id='backSide.normal size'/>
    <active-option view-id='input' option-id='input.back'/>
    <active-option view-id='output' option-id='output.normal size'/>
    <active-option view-id='solution' option-id='solution.full version'/>
    <active-option view-id='table' option-id='table'/>
  </gui-settings>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>muon is..</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the brother of the electron and 200 times heavier</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>pions are...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>mesons with a quark antiquark pair</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>kaons</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>are mesons with a special strange or antistrange quark</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>K mesons</mtext>
    <mtext>&nbsp;</mtext>
    <mo stretchy='false'>(</mo>
    <mtext>Kaons</mtext>
    <mo stretchy='false'>)</mo>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>Are produced through the strong interaction</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Kaons...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>decay through the weak interaction</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>LHC.....&Tab;</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>examines strong interactions and showers of particles</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>in strong interactions the rest energy</mtext>
    <mo>&plus;</mo>
    <mtext>&nbsp;</mtext>
    <mtext>kinetic energy</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>is equal to the total energy of products</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Hadrons contain...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>either 3 or 2 quark or antiquarks</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>uud</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>proton</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>udd</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>neutron</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&pi;</mi>
      <mo>&plus;</mo>
    </msup>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>u</mtext>
    <mover>
      <mtext>d</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&pi;</mi>
      <mo>&minus;</mo>
    </msup>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext mathsize='small'>d</mtext>
    <mover>
      <mtext>u</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mtext>K</mtext>
      <mo>&plus;</mo>
    </msup>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext mathsize='small'>u</mtext>
    <mover>
      <mtext>s</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mover>
        <mtext>K</mtext>
        <mo>&macr;</mo>
      </mover>
      <mtext>0</mtext>
    </msup>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>s</mtext>
    <mover>
      <mtext>d</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>leptons are...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>fundamental</mtext>
    <mtext>&nbsp;</mtext>
    <mo stretchy='false'>(</mo>
    <mtext>empty</mtext>
    <mo stretchy='false'>)</mo>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Baryons contain...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>3 quarks</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>charge is always...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>conserved</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>we know there are quarks in protons as..</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>high energy electrons are scattered inside them.</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Strangness is conserved...&Tab;</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>in a strong interaction.</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Strangness is not conserved...&Tab;</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>in a weak interaction.</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&mu;</mi>
      <mo>&plus;</mo>
    </msup>
    <mover>
      <mo>&xrarr;</mo>
      <mtext>decay</mtext>
    </mover>
    <mtext>&nbsp;</mtext>
    <mtext>&nbsp;</mtext>
    <msup>
      <mtext>e</mtext>
      <mo>&plus;</mo>
    </msup>
    <mo>&plus;</mo>
    <mover>
      <msub>
        <mi>&nu;</mi>
        <mi>&mu;</mi>
      </msub>
      <mo>&macr;</mo>
    </mover>
    <mo>&plus;</mo>
    <msub>
      <mi>&nu;</mi>
      <mtext>e</mtext>
    </msub>
  </mrow>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext mathsize='small'>Q:</mtext>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mo mathsize='small'>&plus;</mo>
        <mtext mathsize='small'>1</mtext>
        <mo lspace='1px' rspace='1px'>&rarr;</mo>
        <mo>&plus;</mo>
        <mtext>1</mtext>
        <mo>&plus;</mo>
        <mtext>0</mtext>
        <mo>&plus;</mo>
        <mtext>0</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <msub>
          <mtext>L</mtext>
          <mi>&mu;</mi>
        </msub>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mtext mathsize='small'>:</mtext>
        <mo mathsize='small'>&minus;</mo>
        <mtext mathsize='small'>1</mtext>
        <mo lspace='1px' rspace='1px'>&rarr;</mo>
        <mtext>0</mtext>
        <mo>&plus;</mo>
        <mtext>0</mtext>
        <mo>&minus;</mo>
        <mtext>1</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <msub>
          <mtext>L</mtext>
          <mtext>e</mtext>
        </msub>
        <mtext mathsize='small'>&nbsp;</mtext>
        <mtext mathsize='small'>: 0</mtext>
        <mo lspace='1px' rspace='1px'>&rarr;</mo>
        <mo>&minus;</mo>
        <mtext>1</mtext>
        <mo>&plus;</mo>
        <mtext>1</mtext>
        <mo>&plus;</mo>
        <mtext>0</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>a strange quark has a strangeness of..</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mo>&minus;</mo>
    <mtext>1</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>an anti</mtext>
    <mo>&minus;</mo>
    <mtext>strange quark has a strangeness of..</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mo>&plus;</mo>
    <mtext>1</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Neutrinos are formed...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>in the Sun</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&mu;</mi>
      <mo>&minus;</mo>
    </msup>
    <mover>
      <mo>&xrarr;</mo>
      <mtext>decay</mtext>
    </mover>
    <mtext>&nbsp;</mtext>
    <mtext>&nbsp;</mtext>
    <msup>
      <mtext>e</mtext>
      <mo>&minus;</mo>
    </msup>
    <mo>&plus;</mo>
    <mover>
      <msub>
        <mi>&nu;</mi>
        <mtext>e</mtext>
      </msub>
      <mo>&macr;</mo>
    </mover>
    <mo>&plus;</mo>
    <mtext>?</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <msub>
      <mi>&nu;</mi>
      <mi>&mu;</mi>
    </msub>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>The muon is unstable....</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>mean lifetime of 2.2</mtext>
    <mi>&mu;</mi>
    <mtext>s</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>The electromagnetic interaction is mediated by the...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>photon</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>The weak interaction is mediated by the...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <msup>
      <mtext>W</mtext>
      <mo>&plus;</mo>
    </msup>
    <mtext>&nbsp;</mtext>
    <mtext>or</mtext>
    <mtext>&nbsp;</mtext>
    <msup>
      <mtext>W</mtext>
      <mo>&minus;</mo>
    </msup>
    <mtext>or</mtext>
    <mtext>&nbsp;</mtext>
    <msup>
      <mtext>Z</mtext>
      <mtext>0</mtext>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>The strong interaction is felt by...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>Quarks</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>charged particles such as electrons are...</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>not affected by the strong force.</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mtext>e</mtext>
      <mo>&plus;</mo>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mtext>e</mtext>
      <mo>&minus;</mo>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&pi;</mi>
      <mtext>o</mtext>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&pi;</mi>
      <mo>&plus;</mo>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&pi;</mi>
      <mo>&minus;</mo>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mtext>K</mtext>
      <mtext>o</mtext>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>p</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>n</mtext>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mover>
      <mtext>qqq</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>q</mtext>
    <mover>
      <mtext>q</mtext>
      <mo>&macr;</mo>
    </mover>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&Lambda;</mi>
      <mtext>0</mtext>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <msup>
      <mi>&Sigma;</mi>
      <mo>&minus;</mo>
    </msup>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>Animated Science Revision</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>Chapter 2 "Quarks and Leptons"</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
</eqnpairs>
