Zero Cross Section Problem

Dear CalcHEP authors,

I ran into a problem when trying to generate the following process:

p p -> j j W h

Attached is the batch file I used:

###############################################
# batch_file for CalcHEP #
# It has to be launched via #
# ./calchep_batch batch_file #
# Lines beginning with # are ignored. #
###############################################

Model: SM
Model changed: False
Gauge: unitary

Process: p,p->jet,jet,W,H

Composite: p=u,u~,d,d~,s,s~,c,c~,g
Composite: W=W+,W-
Composite: l=e-,e+,mu-,mu+
Composite: v=ve,ve~,vm,vm~
Composite: jet=u,u~,d,d~,s,s~,c,c~,g

pdf1: PDT:NNPDF23_lo_as_0130_qed(proton)
pdf2: PDT:NNPDF23_lo_as_0130_qed(proton)

p1: 50000
p2: 50000

Cut parameter: J(jet,jet)
Cut invert: False
Cut min: 0.4
Cut max:

Cut parameter: T(jet)
Cut invert: False
Cut min: 20
Cut max:

Cut parameter: UETA(jet)
Cut invert: False
Cut min: 3.0
Cut max: 5.0

Number of events (per run step): 10000
Filename: BP2
NTuple: False
Cleanup: False

Parallelization method: local
#Que: brody_main
#Walltime: 0.15
#Memory: 1
#email: name@address
#Max number of cpus: 2

Max number of nodes: 16
Max number of processes per node: 1

sleep time: 3
nice level : 19

nSess_1: 5
nCalls_1: 200000
nSess_2: 5
nCalls_2: 200000
###############################################

Since we're focusing on the forward and backward regions, we implemented a user-defined function which is basically the absolute value of pseudorapidity in usrfun.c:

###############################################
else if(name==strstr(name,"ETA(")) // name is started from "ETA("
    { //read p1
       int np=sscanf(name+4,"%[^)]",p1);
       for(i=nIn;i<nIn+nOut;i++)
       {
          if(strcmp(p1,pName[i])==0) //find position of particles
          { double * q1=pvect+4*i;
            double pp = sqrt(q1[1]*q1[1]+q1[2]*q1[2]+q1[3]*q1[3]);
            double eta = fabs(log((pp+q1[3])/(pp-q1[3])))/2.; // ETA
          }
       }
       return eta;
    }
###############################################

However, every time I ran the batch file, it always gave me exactly zero cross section.

Could you please give me a hint on the issue? Many thanks to you!