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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:
Proton Photon
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.