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PDF
The PDF of a proton or antiproton can be specified with the "pdf1" and "pdf2" kewords which correspond to the pdfs of the first and second incoming particles respectively. Choices for these keywords are:
cteq6l (anti-proton) |
cteq6l (proton) |
mrst2002lo (anti-proton) |
mrst2002lo (proton) |
cteq6m (anti-proton) |
cteq6m (proton) |
cteq5m (anti-proton) |
cteq5m (proton) |
mrst2002nlo (anti-proton) |
mrst2002nlo (proton) |
None |
An example for the LHC is:
pdf1 | : | cteq6l (proton) |
pdf2 | : | cteq6l (proton) |
The default is none. These keywords can also be used for electron positron colliders. For this process the available pdfs are:
ISR |
ISR & Beamstrahlung |
Equiv. Photon |
Laser photons |
None |
The following proton electron collider pdf is also available:
All of these pdfs must be typed exactly or copied into the batch file.
Bunch Specification
If "ISR & Beam" is chosen, then the following beam parameters may be specified:
Bunch x+y sizes (nm) | : | 550 |
Bunch length (mm) | : | 0.45 |
Number of particles | : | 2.1E+10 |
The default values are the default values in CalcHEP and correspond roughly with the ILC.
Equiv. Photon
If "Equiv. Photon" is chosen for the pdf, then the following parameters may be specified:
Photon particle | : | e^- |
|Q|max | : | 150 |
Choices for the "Photon particle" keyphrase are mu^-, e^-, e^+, mu^+. The default is e^+. The default for the keyword "|Q|max" is the same as in CalcHEP.
Proton Photon
If "Proton Photon" is chosen then the following may be specified:
Incoming particle mass | : | 0.937 |
Incoming particle charge | : | -1 |
|Q^2|max | : | 2.1 |
Pt cut of outgoing proton | : | 0.11 |
The defaults are the same as in CalcHEP.