Introduction to Heavy Ion Physics
Introduction to Heavy Ion Physics
Introduction to Heavy Ion Physics
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Rapidity and Pseudorapidity<br />
rapidity<br />
pseudorapidity<br />
y<br />
<br />
1<br />
2<br />
<br />
log<br />
<br />
<br />
E<br />
E<br />
<br />
<br />
p<br />
p<br />
z<br />
z<br />
<br />
<br />
<br />
h 1 2 log p p z<br />
<br />
p p z<br />
<br />
1<br />
2 log(tan(q 2 ))<br />
• in the ultrarelativistic limit: p ~ E h ~ y<br />
• for the transverse variables:<br />
<br />
rapidity<br />
pseudorapidity<br />
p<br />
E<br />
z<br />
m<br />
m<br />
T<br />
T<br />
sinh( y)<br />
cosh( y)<br />
p<br />
p<br />
z<br />
<br />
<br />
p<br />
p<br />
T<br />
T<br />
sinh( h)<br />
cosh( h)<br />
8-th Summer School on Nuclear <strong>Physics</strong>, 3-12/07/12<br />
98
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