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2013:groups:tools:slha

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Extending the SLHA: cross section information

Interested people (please add your name)

Benjamin, Peter, Sezen, Filip, Ben, Pietro, Werner, …

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

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: this contains the alpha_s power
2013/groups/tools/slha.1371565171.txt.gz · Last modified: 2013/06/18 16:19 by benjamin.fuks