What is soft-QCD? - High Energy Physics
What is soft-QCD? - High Energy Physics
What is soft-QCD? - High Energy Physics
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Soft-<strong>QCD</strong> models<br />
e.g. Pythia<br />
<strong>QCD</strong> 22 scattering ~ α S2 (p T2 )/p T<br />
4<br />
Dampen divergence at low p T ~ α S2 (p T<br />
2<br />
+ p T02 )/(p T<br />
2<br />
+ p T02 ) 2<br />
smaller p T0 more low p T activity<br />
Screening : At low p T wavelength of exchanged particle<br />
becomes too large to resolve colour charges<br />
p T0 = P 1 (E COM / 1.8 TeV) P 2<br />
Emily Nurse<br />
Soft-<strong>QCD</strong><br />
11
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