Comment 7 for bug 1938107

 Dear Olivier,

  Many thanks for your reply. I did set correctly the width of h1, h2 and h3 in the parameter card. Even after setting the width of h1 to auto, the cross-section is still big. Please find below the width from the parameter card after the run.

# PDG Width
DECAY 25 2.507258e-09
# BR NDA ID1 ID2 ...
   7.306541e-01 2 5 -5 # 1.8319382895272787e-09
   1.659561e-01 2 4 -4 # 4.1609462719106996e-10
   1.018637e-01 2 15 -15 # 2.553985133493676e-10
   1.115686e-03 2 3 -3 # 2.7973120534868743e-12
   4.069898e-04 2 13 -13 # 1.0204283485242734e-12
   2.779234e-06 2 1 -1 # 6.9682572737808224e-15
   7.114506e-07 2 2 -2 # 1.7837901895657866e-15
   9.523247e-09 2 11 -11 # 2.387723627205521e-17
#
# PDG Width
DECAY 35 4.520000e-03
#
# PDG Width
DECAY 36 1.130000e-04
#
# PDG Width
DECAY 37 1.000000e+00
#
# PDG Width
DECAY 9000006 5.753088e-03
</slha>
<MGGenerationInfo>
# Number of Events : 10000
# Integrated weight (pb) : 0.5919814999999999

Following the previous email, I have modified the file particles.py

h1__1 = Particle(pdg_code = 9000006,
                 name = 'h1__1',
                 antiname = 'h1__1',
                 spin = 1,
                 color = 1,
                 mass = Param.MP,
                 width = Param.WH1_big,
                 texname = 'h1',
                 antitexname = 'h1',
                 charge = 0.0,
                 line = 'dashed',
                 propagating = True,
                 goldstoneboson = False,
                 GhostNumber = 0,
                 LeptonNumber = 0,
                 selfconjugate = True)

and parameter.py:
WH1_big = Parameter(name = 'WH1_big',
                nature = 'external',
                type = 'real',
                value = 0.00575308848,
                texname = '\\text{WH1}',
                lhablock = 'DECAY',
                lhacode = [9000006])

Many thanks for any suggestions and help.

Best regards