double EW_CHMN::AFB_q(const QCD::quark q) const
{
return ( 3.0 / 4.0 * A_l(StandardModel::ELECTRON)
* A_q(q));
}
int main(int argc, char* argv[]){
typedef ROOT::Math::SMatrix<double,2> SMatrix22;
typedef ROOT::Math::SVector<double,2> SVector2;
std::string param_file;
if (argc != 2) {
std::cout << "Usage: ./ZbbCalc <parameter file>" << std::endl;
exit(1);
} else {
param_file = argv[1];
}
TRandom3 rand;
TH1F h_N1("N1","N1",100,10000,13000);
TH1F h_N2("N2","N2",100,1000,2000);
SimpleParamParser input;
input.ParseFile(param_file);
double x_N_TAG_1 = input.GetParam<double>("N_TAG_1");
double N_TAG_1_err = input.GetParam<double>("N_TAG_1_err");
double x_N_TAG_2 = input.GetParam<double>("N_TAG_2");
double N_TAG_2_err = input.GetParam<double>("N_TAG_2_err");
double N_TAG_1, N_TAG_2;
double p_1 = input.GetParam<double>("p_1");
double p_21 = input.GetParam<double>("p_21");
double p_22 = input.GetParam<double>("p_22");
double p_2;
double ftt_1 = input.GetParam<double>("ftt_1");
double ftt_2 = input.GetParam<double>("ftt_2");
double N_RTAG_1, N_RTAG_2;
double x_e_b_11 = input.GetParam<double>("e_b_11");
double e_b_11_err = input.GetParam<double>("e_b_11_err");
double x_e_b_21 = input.GetParam<double>("e_b_21");
double e_b_21_err = input.GetParam<double>("e_b_21_err");
double x_e_b_22 = input.GetParam<double>("e_b_22");
double e_b_22_err = input.GetParam<double>("e_b_22_err");
double e_b_11, e_b_21, e_b_22;
double x_e_l_1 = input.GetParam<double>("e_l_1");
double e_l_1_err = input.GetParam<double>("e_l_1_err");
double x_e_l_2 = input.GetParam<double>("e_l_2");
double e_l_2_err = input.GetParam<double>("e_l_2_err");
double e_l_1, e_l_2;
double x_e_r_11 = input.GetParam<double>("e_r_11");
double e_r_11_err = input.GetParam<double>("e_r_11_err");
double x_e_r_21 = input.GetParam<double>("e_r_21");
double e_r_21_err = input.GetParam<double>("e_r_21_err");
double x_e_r_12 = input.GetParam<double>("e_r_12");
double e_r_12_err = input.GetParam<double>("e_r_12_err");
double x_e_r_22 = input.GetParam<double>("e_r_22");
double e_r_22_err = input.GetParam<double>("e_r_22_err");
double x_e_r_01 = input.GetParam<double>("e_r_01");
double e_r_01_err = input.GetParam<double>("e_r_01_err");
double x_e_r_02 = input.GetParam<double>("e_r_02");
double e_r_02_err = input.GetParam<double>("e_r_02_err");
double e_r_11, e_r_21, e_r_12, e_r_22, e_r_01, e_r_02;
double R = input.GetParam<double>("R");
double x_a_l_1 = input.GetParam<double>("a_l_1");
double a_l_1_err = input.GetParam<double>("a_l_1_err");
double x_a_l_2 = input.GetParam<double>("a_l_2");
double a_l_2_err = input.GetParam<double>("a_l_2_err");
double a_l_1, a_l_2;
double lumi = input.GetParam<double>("lumi");
double N1, N2;
for (unsigned i = 0; i < 1000000; ++i) {
p_2 = p_21 * p_22;
N_TAG_1 = x_N_TAG_1;
N_TAG_2 = x_N_TAG_2;
e_b_11 = x_e_b_11;
e_b_21 = x_e_b_21;
e_b_22 = x_e_b_22;
e_l_1 = x_e_l_1;
e_l_2 = x_e_l_2;
e_r_11 = x_e_r_11;
e_r_21 = x_e_r_21;
e_r_12 = x_e_r_12;
e_r_22 = x_e_r_22;
e_r_01 = x_e_r_01;
e_r_02 = x_e_r_02;
a_l_1 = x_a_l_1;
a_l_2 = x_a_l_2;
if (i > 0) {
N_TAG_1 = rand.Gaus(N_TAG_1, N_TAG_1_err);
N_TAG_2 = rand.Gaus(N_TAG_2, N_TAG_2_err);
e_b_11 = rand.Gaus(e_b_11, e_b_11_err);
e_b_21 = rand.Gaus(e_b_21, e_b_21_err);
e_b_22 = rand.Gaus(e_b_22, e_b_22_err);
e_l_1 = rand.Gaus(e_l_1, e_l_1_err);
e_l_2 = rand.Gaus(e_l_2, e_l_2_err);
e_r_11 = rand.Gaus(e_r_11, e_r_11_err);
e_r_12 = rand.Gaus(e_r_12, e_r_12_err);
e_r_21 = rand.Gaus(e_r_21, e_r_21_err);
e_r_22 = rand.Gaus(e_r_22, e_r_22_err);
e_r_01 = rand.Gaus(e_r_01, e_r_01_err);
e_r_02 = rand.Gaus(e_r_02, e_r_02_err);
a_l_1 = rand.Gaus(a_l_1, a_l_1_err);
a_l_2 = rand.Gaus(a_l_2, a_l_2_err);
}
double N_T_arr[] = { N_TAG_1,
N_TAG_2 };
SVector2 N_T(N_T_arr,2);
if (i == 0) {
std::cout << "-----------------------------------------------" << std::endl;
std::cout << "N_events (tagged) [Z+1b, Z+2b]: \n\t" << N_T << std::endl;
}
N_T[0] = N_TAG_1 * (p_1 - ftt_1)
+ N_TAG_2 * (p_22+p_21 - 2.*p_2);
N_T[1] = N_TAG_2 * (p_2 - ftt_2);
double ep_b_arr[] = { 1.0/e_b_11 , -1.0 * e_b_21/(e_b_22*e_b_11),
0.0 , 1.0/(e_b_22) };
double ep_l_arr[] = { 1.0/e_l_1 , 0.0,
0.0 , 1.0/e_l_2 };
double ep_r_arr[] = { e_r_11 + R*e_r_01 , e_r_21 + R*e_r_01,
e_r_12 + R*e_r_02 , e_r_22 + R*e_r_02 };
double A_l_arr[] = { 1.0/a_l_1 , 0.0,
0.0 , 1.0/a_l_2 };
SMatrix22 ep_b(ep_b_arr,4);
SMatrix22 ep_l(ep_l_arr,4);
SMatrix22 ep_r(ep_r_arr,4);
SMatrix22 A_l(A_l_arr,4);
if (i ==0) {
std::cout << "-----------------------------------------------" << std::endl;
std::cout << "epsilon_b Matrix:\n" << ep_b << std::endl;
std::cout << "epsilon_l Matrix:\n" << ep_l << std::endl;
std::cout << "epsilon_r/C_hadron Matrix:\n" << ep_r << std::endl;
}
ep_r.Invert();
if (i == 0) {
std::cout << "epsilon_r/C_hadron Matrix (inverted):\n" << ep_r << std::endl;
std::cout << "Acceptance_l Matrix:\n" << A_l << std::endl;
std::cout << "-----------------------------------------------" << std::endl;
std::cout << "N_events (after purity & f_tt): \n\t" << N_T << std::endl;
}
double total_before_ep_b = N_T[0] + N_T[1];
N_T = ep_b * N_T;
if (i == 0) std::cout << "N_events (after epsilon_b):\n\t" << N_T << std::endl;
double total_before_ep_l = N_T[0] + N_T[1];
N_T = ep_l * N_T;
if (i == 0) std::cout << "N_events (after epsilon_l):\n\t" << N_T << std::endl;
double total_before_c_had = N_T[0] + N_T[1];
N_T = ep_r * N_T;
if (i == 0) std::cout << "N_events (after epsilon_r/C_hadron):\n\t" << N_T << std::endl;
double total_before_a_l = N_T[0] + N_T[1];
N_T = A_l * N_T;
double total_after_a_l = N_T[0] + N_T[1];
if (i == 0)std::cout << "N_events (after Acceptance_l):\n\t" << N_T << std::endl;
if (i > 0) {
h_N1.Fill(N_T[0]);
h_N2.Fill(N_T[1]);
}
if (i == 0) {
N1 = N_T[0];
N2 = N_T[1];
std::cout << "-----------------------------------------------" << std::endl;
std::cout << "Effective Z+1b inclusive e_b(HE): " << total_before_ep_b/total_before_ep_l << std::endl;
std::cout << "Effective Z+1b inclusive e_l: " << total_before_ep_l/total_before_c_had << std::endl;
std::cout << "Effective Z+1b inclusive C_had: " << total_before_c_had/total_before_a_l << std::endl;
std::cout << "Effective Z+1b inclusive A_l: " << total_before_a_l/total_after_a_l << std::endl;
std::cout << "-----------------------------------------------" << std::endl;
}
}
TFitResultPtr h_N1_fit = h_N1.Fit("gaus","NSQ");
double N1_err = h_N1_fit->Parameter(2);
TFitResultPtr h_N2_fit = h_N2.Fit("gaus","NSQ");
double N2_err = h_N2_fit->Parameter(2);
double XS_1 = N1 / lumi;
double XS_1_err = N1_err/lumi;
double XS_2 = N2 / lumi;
double XS_2_err = N2_err/lumi;
std::cout << "XS [pb] (Z+1b Exclusive):\t" << XS_1
<< " +/- " << XS_1_err << " (stat)" << std::endl;
std::cout << "XS [pb] (Z+2b Inclusive):\t" << XS_2
<< " +/- " << XS_2_err << " (stat)" << std::endl;
return 0;
}
double EW_CHMN::AFB_l(const QCD::lepton l) const
{
return ( 3.0 / 4.0 * A_l(StandardModel::ELECTRON)
* A_l(l));
}
