Form Factor

Hi Olivier,

I have a problem with the calculation for aQGC with UFO Model file at ep collision with defined form factor given below.

FFVAL = FormFactor(name = 'FFVAL',
                 type = 'real',
                 value ='1./((1.+((2.*P(-1,1)*P(-1,2))/lmb**2))**ffexponent)')

The results are unphysical (e+23).

INFO: Idle: 20, Running: 4, Completed: 0 [ current time: 00h17 ]
INFO: Idle: 19, Running: 4, Completed: 1 [ 22.5s ]
INFO: Idle: 16, Running: 4, Completed: 4 [ 46.8s ]
INFO: Idle: 14, Running: 4, Completed: 6 [ 50.4s ]
INFO: Idle: 12, Running: 4, Completed: 8 [ 1m 11s ]
INFO: Idle: 10, Running: 4, Completed: 10 [ 1m 14s ]
INFO: Idle: 9, Running: 4, Completed: 11 [ 1m 23s ]
INFO: Idle: 8, Running: 4, Completed: 12 [ 1m 26s ]
INFO: Idle: 7, Running: 4, Completed: 13 [ 1m 45s ]
INFO: Idle: 5, Running: 4, Completed: 15 [ 1m 52s ]
INFO: Idle: 3, Running: 4, Completed: 17 [ 2m 10s ]
INFO: Idle: 2, Running: 4, Completed: 18 [ 2m 20s ]
INFO: Idle: 0, Running: 4, Completed: 20 [ 2m 36s ]
INFO: Idle: 0, Running: 1, Completed: 23 [ 2m 44s ]
INFO: Idle: 0, Running: 0, Completed: 24 [ 2m 47s ]
INFO: End survey
refine 1000
Creating Jobs
INFO: Refine results to 1000
INFO: Generating 1000.0 unweighted events.
sum of cpu time of last step: 10m25s
INFO: Effective Luminosity 1.700544832425747e-21 pb^-1
INFO: need to improve 16 channels
- Current estimate of cross-section: 7.056561974248315e+23 +- 4.8367066909299477e+30
    P1_lq_azvlq_z_ll
    P1_lq_azvlq_z_mummup

I would be glad if you help me.

cheers.

Emre.