=== Description of the UFO models to generate Dirac magentic monopoles

Dirac magentic monopoles can be generated by Drell-Yan process or photon fusion process. The UFO models shown here describe both the processes and generate the corresponding LHE files. These models were tested for three spin cases (0, 1/2 and 1) and two processes (photon fusion and Drell-Yan). 
a. velocity independent coupling models: mono_spinzero, mono_spinhalf and mono_spinone.
b. velocity dependent coupling models: mono_spinzero_beta, mono_spinhalf_beta, mono_spinone_beta. 

Details of these models can be found in arXiv:1808.08942.

A. Instructions to run Drell-Yan spin zero model: 

    a. Part 1 of the script to run spin zero monopole model (put the following snippet in a textfile named 'Spin0ScriptDY.txt'): 
    '''
    import model mono_spinzero_beta
    generate p p > a > mm+ mm-
    output Pre5For

    '''

    b. Part 2 of the script to run spin zero monopole model (put the following snippet in a textfile named 'Spin0ScriptDY2.txt'):

    '''
    launch Pre5For
    analysis=MADANALYSIS_4
    set run_card ebeam1 6500
    set ebeam2 6500
    set lpp1 1
    set lpp2 1
    set pdlabel nn23lo1
    set lhaid 230000
    set nevents 1000
    set dynamical_scale_choice -1
    set fixed_couplings False
    set param_card mass 25 125
    set mass 4110000 6000
    set decay 4110000 0.000000e+0
    set gch 1 1.0

    '''


    c. Run the part 1 of the script: ./bin/mg5_aMC Spin0ScriptDY.txt

    d. A new folder named Pre5For will be generated.

    e. Go to Pre5For/Sources and open genps.inc.

    f. Use the absolute path of 'maxparticles.inc' on line 5.

    g. Run the part 2 of the script: ./bin/mg5_aMC Spin0ScriptDY2.txt

    h. If you don't change the part 1 of the script at all (you only need to change it to import different monopole models), then you just need to use steps c-f only once. After that, in step g, change the mass parameter in script 2 and run for different mass points.

    i. For different spin models, one just needs to import those corresponding models in the part 1 of the script. 



B. Instructions to run photon fusion spin zero model:

    a. Part 1 of the script to run spin zero monopole model (put the following snippet in a textfile named 'Spin0Script.txt'): 
    '''
    import model mono_spinzero_beta
    generate a a > mm+ mm-
    output Pre5

    '''

    b. Part 2 of the script to run spin zero monopole model (put the following snippet in a textfile named 'Spin0Script2.txt'):

    '''
    launch Pre5
    analysis=madanalysis5
    set run_card ebeam1 6500
    set ebeam2 6500
    set lpp1 2
    set lpp2 2
    set pdlabel nn23lo1
    set lhaid 230000
    set nevents 1000
    set dynamical_scale_choice -1
    set fixed_couplings False
    set param_card mass 25 125
    set mass 4110000 6000
    set decay 4110000 0.000000e+0
    set gch 1 1.0

    '''


    c. Run the part 1 of the script: ./bin/mg5_aMC Spin0Script.txt

    d. A new folder named Pre5 will be generated.

    e. Go to Pre5/Sources and open genps.inc.

    f. Use the absolute path of 'maxparticles.inc' on line 5.

    g. Run the part 2 of the script: ./bin/mg5_aMC Spin0Script2.txt

    h. If you don't change the part 1 of the script at all (you only need to change it to import different monopole models), then you just need to use steps c-f only once. After that, in step g, change the mass parameter in script 2 and run for different mass points.

    i. For different spin models, one just needs to import those corresponding models in the part 1 of the script.