# neutron + Neutrino Collision

Dear MadGraph Experts

Currently I am calculating the X-section of p v > p v, considering the proton is at rest ( Neutrino + Neutron collision ), Can I use the below script for the same.

I am not sure about pdlabel and lhaid.

if it is not correct please help me to find the correct one.

#******

# PDF CHOICE: this automatically fixes also alpha_s and its evol. *

#******

nn23lo1 = pdlabel ! PDF set

230000 = lhaid ! if pdlabel=lhapdf, this is the lhapdf number

#******

# Heavy ion PDF / rescaling of PDF *

#******

0 = nb_proton1 # number of proton for the first beam

1 = nb_neutron1 # number of neutron for the first beam

0.93957 = mass_ion1 # mass of the heavy ion (first beam)

# Note that seting differently the two beams only work if you use

# group_subproces

1 = nb_proton2 # number of proton for the second beam

0 = nb_neutron2 # number of neutron for the second beam

-1.0 = mass_ion2 # mass of the heavy ion (second beam)

Best

Ouseph

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