void EvolDF1nlep::Df1Evolnlep(double mu, double M, double nf, schemes scheme) {
matrix<double> resLO(dim, 0.), resNLO(dim, 0.), resLO_ew(dim,0.), resNLO_ew(dim,0.);
int L = 6 - (int) nf;
double alsM = model.Als(M) / 4. / M_PI;
double alsmu = model.Als(mu) / 4. / M_PI;
double ale = model.getAle()/ 4. / M_PI ;
double eta = alsM / alsmu;
for (unsigned int k = 0; k < dim; k++) {
double etap = pow(eta, a[L][k]);
for (unsigned int i = 0; i < dim; i++) {
for (unsigned int j = 0; j < dim; j++) {
resLO(i,j) += b[L][i][j][k] * etap;
resNLO(i,j) += c[L][i][j][k] * etap * alsmu;
resNLO(i,j) += d[L][i][j][k] * etap * alsM;
resLO_ew(i,j) += m[L][i][j][k] * etap * ale/alsmu;
resLO_ew(i,j) += n[L][i][j][k] * etap * ale/alsM;
resNLO_ew(i,j) += o[L][i][j][k] * etap * ale;
resNLO_ew(i,j) += p[L][i][j][k] * etap * ale;
resNLO_ew(i,j) += u[L][i][j][k] * etap * ale * log(eta);
resNLO_ew(i,j) += q[L][i][j][k] * etap * ale;
resNLO_ew(i,j) += r[L][i][j][k] * etap * ale;
resNLO_ew(i,j) += s[L][i][j][k] * etap * ale / eta;
resNLO_ew(i,j) += t[L][i][j][k] * etap * ale * eta;
}
}
}
switch(order_ew) {
case NLO_ew:
*elem[NLO_ew] = (*elem[NLO]) * resLO_ew +
(*elem[NLO_ew]) * resLO + (*elem[LO]) *resNLO_ew;
case LO_ew:
*elem[LO_ew] = (*elem[LO]) * resLO_ew;
break;
default:
throw std::runtime_error("Error in EvolDF1nlep::Df1Evolnlep()");
}
switch(order) {
case NNLO:
*elem[NNLO] = 0.;
case NLO:
*elem[NLO] = (*elem[LO]) * resNLO + (*elem[NLO]) * resLO;
case LO:
*elem[LO] = (*elem[LO]) * resLO;
break;
default:
throw std::runtime_error("Error in EvolDF1nlep::Df1Evolnlep()");
}
}
void EvolDC1Buras::DC1EvolBuras(double mu, double M, double nf, schemes scheme)
{
gslpp::matrix<double> resLO(dim, 0.), resNLO(dim, 0.), resNNLO(dim, 0.);
int L = 6 - (int) nf;
double alsM = model.Als(M) / 4. / M_PI;
double alsmu = model.Als(mu) / 4. / M_PI;
double eta = alsM / alsmu;
for (unsigned int k = 0; k < dim; k++) {
double etap = pow(eta, a[L][k] / 2. / model.Beta0(nf));
for (unsigned int i = 0; i < dim; i++){
for (unsigned int j = 0; j < dim; j++) {
resNNLO(i, j) += 0.;
if(fabs(e(i).real() - e(j).real() + 2. * model.Beta0(nf))>0.000000000001) {
resNLO(i, j) += c[L][i][j][k] * etap * alsmu;
resNLO(i, j) += d[L][i][j][k] * etap * alsM;
}
else{
resNLO(i, j) += - c[L][i][j][k] * etap * alsmu * log(eta);
}
resLO(i, j) += b[L][i][j][k] * etap;
}
}
}
switch(order) {
case NNLO:
*elem[NNLO] = 0.;
case NLO:
*elem[NLO] = (*elem[LO]) * resNLO + (*elem[NLO]) * resLO;
case LO:
*elem[LO] = (*elem[LO]) * resLO;
break;
case FULLNNLO:
case FULLNLO:
default:
throw std::runtime_error("Error in EvolDC1Buras::DC1EvolBuras()");
}
}
