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subroutine jvtxxx(vc,tc,gt,vmass,vwidth , jvt)
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c This subroutine computes an off-shell vector current from
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c the coupling of two gauge bosons and a tensor boson.
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c complex vc(6) : input vector v
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c complex tc(18) : input tensor T
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c complex gt : coupling constant gtv=-1/Lambda
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c real vmass : mass of output vector v'
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c real vwidth : width of output vector v'
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c complex jvt(6) : vector current j^mu(v':v,T)
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c- by Q.Li - OCT. 2006
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double complex vc(6), tc(18), gt, jvt(6)
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double precision vmass, vwidth
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double complex ft(6,4),TVM(4),TKM(4)
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double precision MET(4,4)
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double complex T12, T13, T14, T23, T24, T34, T00
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double complex K2V1,K1V1
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double complex TKK,TK2V1, dum
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double precision pv1(4), pv2(4), F, pp2
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double precision rZero, rTwo
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parameter( rZero = 0.0d0, rTwo = 2.0d0 )
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parameter( cZero = ( 0.0d0, 0.0d0 ) )
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jvt(5) = vc(5)+ft(5,1)
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jvt(6) = vc(6)+ft(6,1)
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pv1(1) = -dreal(vc(5))
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pv1(2) = -dreal(vc(6))
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pv1(3) = -dimag(vc(6))
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pv1(4) = -dimag(vc(5))
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pv2(1) = dreal(jvt(5))
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pv2(2) = dreal(jvt(6))
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pv2(3) = dimag(jvt(6))
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pv2(4) = dimag(jvt(5))
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T00 = ft(1,1)-ft(2,2)-ft(3,3)-ft(4,4)
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T12 = ft(1,2) + ft(2,1)
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T13 = ft(1,3) + ft(3,1)
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T14 = ft(1,4) + ft(4,1)
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T23 = ft(2,3) + ft(3,2)
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T24 = ft(2,4) + ft(4,2)
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T34 = ft(3,4) + ft(4,3)
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K2V1 = pv2(1)*vc(1) - pv2(2)*vc(2) - pv2(3)*vc(3) - pv2(4)*vc(4)
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K1V1 = pv1(1)*vc(1) - pv1(2)*vc(2) - pv1(3)*vc(3) - pv1(4)*vc(4)
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F = pv1(1)*pv2(1) - pv1(2)*pv2(2) - pv1(3)*pv2(3) - pv1(4)*pv2(4)
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pp2 = pv2(1)**2 - pv2(2)**2 - pv2(3)**2 - pv2(4)**2
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TKK = TKK + dum*pv1(i)
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TK2V1 = TK2V1 + dum*pv2(i)
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TKK = TKK - T12*(pv1(1)*pv2(2) + pv1(2)*pv2(1))
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& - T13*(pv1(1)*pv2(3) + pv1(3)*pv2(1))
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& - T14*(pv1(1)*pv2(4) + pv1(4)*pv2(1))
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& + T23*(pv1(2)*pv2(3) + pv1(3)*pv2(2))
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& + T24*(pv1(2)*pv2(4) + pv1(4)*pv2(2))
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& + T34*(pv1(3)*pv2(4) + pv1(4)*pv2(3))
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TK2V1 = TK2V1 - T12*(vc(1)*pv2(2) + vc(2)*pv2(1))
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& - T13*(vc(1)*pv2(3) + vc(3)*pv2(1))
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& - T14*(vc(1)*pv2(4) + vc(4)*pv2(1))
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& + T23*(vc(2)*pv2(3) + vc(3)*pv2(2))
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& + T24*(vc(2)*pv2(4) + vc(4)*pv2(2))
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& + T34*(vc(3)*pv2(4) + vc(4)*pv2(3))
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&MET(j,1)*(ft(1,1)*vc(1)-ft(2,1)*vc(2)
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&-ft(3,1)*vc(3)-ft(4,1)*vc(4))
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&-MET(j,2)*(ft(1,2)*vc(1)-ft(2,2)*vc(2)
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&-ft(3,2)*vc(3)-ft(4,2)*vc(4))
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&-MET(j,3)*(ft(1,3)*vc(1)-ft(2,3)*vc(2)
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&-ft(3,3)*vc(3)-ft(4,3)*vc(4))
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&-MET(j,4)*(ft(1,4)*vc(1)-ft(2,4)*vc(2)
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&-ft(3,4)*vc(3)-ft(4,4)*vc(4))
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&MET(j,1)*(ft(1,1)*vc(1)-ft(1,2)*vc(2)
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&-ft(1,3)*vc(3)-ft(1,4)*vc(4))
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&-MET(j,2)*(ft(2,1)*vc(1)-ft(2,2)*vc(2)
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&-ft(2,3)*vc(3)-ft(2,4)*vc(4))
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&-MET(j,3)*(ft(3,1)*vc(1)-ft(3,2)*vc(2)
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&-ft(3,3)*vc(3)-ft(3,4)*vc(4))
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&-MET(j,4)*(ft(4,1)*vc(1)-ft(4,2)*vc(2)
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&-ft(4,3)*vc(3)-ft(4,4)*vc(4))
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&MET(j,1)*(ft(1,1)*pv1(1)-ft(2,1)*pv1(2)
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&-ft(3,1)*pv1(3)-ft(4,1)*pv1(4))
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&-MET(j,2)*(ft(1,2)*pv1(1)-ft(2,2)*pv1(2)
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&-ft(3,2)*pv1(3)-ft(4,2)*pv1(4))
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&-MET(j,3)*(ft(1,3)*pv1(1)-ft(2,3)*pv1(2)
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&-ft(3,3)*pv1(3)-ft(4,3)*pv1(4))
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&-MET(j,4)*(ft(1,4)*pv1(1)-ft(2,4)*pv1(2)
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&-ft(3,4)*pv1(3)-ft(4,4)*pv1(4))
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&MET(j,1)*(ft(1,1)*pv1(1)-ft(1,2)*pv1(2)
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&-ft(1,3)*pv1(3)-ft(1,4)*pv1(4))
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&-MET(j,2)*(ft(2,1)*pv1(1)-ft(2,2)*pv1(2)
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&-ft(2,3)*pv1(3)-ft(2,4)*pv1(4))
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&-MET(j,3)*(ft(3,1)*pv1(1)-ft(3,2)*pv1(2)
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&-ft(3,3)*pv1(3)-ft(3,4)*pv1(4))
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&-MET(j,4)*(ft(4,1)*pv1(1)-ft(4,2)*pv1(2)
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&-ft(4,3)*pv1(3)-ft(4,4)*pv1(4))
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if ( vmass.ne.rZero ) then
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jvt(i) = -(vmass**2+F)*T00*vc(i)
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&+T00*K2V1*(pv1(i)+(1.0d0+F/vmass**2)*pv2(i)
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&+(vmass**2+F)*TVM(i)
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&-TK2V1*pv2(i)*(1.0d0+F/vmass**2)
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&+F/vmass**2*TK2V1*pv2(i)
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jvt(i)=jvt(i)*gt/dcmplx(pp2-vmass**2, vmass*vwidth )
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jvt(i) = -F*T00*vc(i)
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&+K1V1*T00*(pv1(i)+pv2(i))
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&+T00*K2V1*(pv1(i)+pv2(i))
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&-TK2V1*(pv1(i)+pv2(i))
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jvt(i)=jvt(i)*gt/dcmplx(pp2, 0.0d0)