Benjamin, Peter, Sezen, Filip, Ben, Pietro, Werner, Alex A., Nazila, Wolfgang
The plans is to add new blocks to a supersymmetric spectrum with information on production cross section of particles included in the spectrum of interest. We propose to add one new block for each process under consideration.
The block starts with
XSECTION SQRTS PDG_CODE1 PDG_CODE2 NF PDG_CODE3 ....
where
SQRTS: a floating number representing the center-of-mass energy, to be given in GeV.
PDG_CODE1 and PDG_CODE2: two integer numbers, representing the pdg codes of the initial state particles
NF: an integer number, representing the number of final state particles
PDG_CODE3, PDG_CODE4, …: NF integer numbers, representing the pdg codes of the final state particles
This general information line is then followed by the cross section themselves, given as a series of line under the form
SCALE_SCHEME QCD_ORDER EW_ORDER KAPPA_F KAPPA_R PDF_ID VALUE CODE VERSION
where
SCALE_SCHEME: an integer number, related to the way the central scales are chosen. So far, the choices are
0: the central scale is the average mass of the produced particles
1: fixed scales
2: the scale is set to the partonic center-of-mass energy
3: the scale is set to the transverse mass of the final state particles
QCD_ORDER: an integer number, which contains information on the order in alpha_s included in the computation. This is codified as
0: Born cross section
1: NLO cross section
2: NLO+NLL cross section
EW_ORDER: same as above but with respect to electroweak corrections
KAPPA_F: a floating point number, related to the variation of the factorization scale with respect to the central scale. For SCALE_SCHEME set to 1, the scale itself has to be provided.
KAPPA_R: same as above, for the renormalization scale
PDF_ID: the lhapdf code of the employed parton densities
VALUE: a floating point number, representing the value of the cross section in pb.
CODE: a string representing the name of the program which has computed the cross section
VERSION: a string, the version number of the proram employed